makernexuswiki - User contributions [en]

SawStop Professional 3HP Table Saw

2023-08-04T04:52:05Z

Frankst: +copyright notice

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw. Copyright SawStop, LLC, July 2016, All Rights Reserved]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includes a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===Not completely safe===
The SawStop manufacturer's marketing materials exaggerate the safety of their saw. The marketing materials show fingers with nothing but a slight nick. They do not show more serious injuries, such as what happened in Rex Krueger's video. Instead of striking the blade from the front, his left thumbnail touched the side of the blade, which suddenly pulled the rest of his thumb into alignment with the blade. The safety system saved his thumb, but he still needed stitches in an emergency room. The accident would not have happened if he had been using the blade guard.

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
After the power is shut off, the StopSaw blade continues to spin for about 8 seconds, remaining hazardous. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw.
# Identify how it was triggered—check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging—youtube if you need help).
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance).
# Install new cartridge & blade—check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well—especially if people don't check when changing blades.
# Fill out a Sawstop trigger report and give it to a manager.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:Sawstop full image.jpg

2023-08-04T04:47:56Z

Frankst: +copyright

User talk:Jschrempp

2023-08-04T04:41:33Z

Frankst: blade guard

Hi,

If you have questions about this wiki or how to use it, make your comment here and I'll answer you the best I can. Or email me: jim @ jimschrempp.com

== The wiki ==

I think this wiki can be used to great advantage in organizing and publishing information. Thanks for creating it and for giving me an account. I guessed at the categories. It needs to be refined.

At some point soon, we will have to establish some housekeeping rules to make it stay useful. Wikis tend to quickly fill with junk.

I suggest not creating sections with just one '=' That is the level the article heading, which contains a hidden '='

Thanks for being at the meeting on Friday. Eric gave a very good presentation. I look forward to working with you. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 18:13, 22 January 2018 (EST)

: Thanks. I agree that wikis have to be maintained. I like keeping things clean, and I'm glad to find a kindred spirit. Good point about starting down a level in titles. I'll do that from now on.

: WRT housekeeping. Is it something we just chat about? Or should I create a link off the main page for "rules of the wiki" or somesuch.[[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])

:: This wiki is a lot better organized than I first thought. The main page clearly show the structure. I like the two column layout you created. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 20:09, 25 January 2018 (EST)

==Communication==
Wikis are an excellent place to communicate. Wikipedia built an encyclopedia that way. Editors have discussions close to the thing they are discussing, such as on the talk page of an article they are discussing. Wikipedia has about 18 [https://en.wikipedia.org/wiki/Wikipedia:Namespace namespaces]. Storing discussions in the wiki keeps everything together. With email, I have to search through my inbox.

This wiki is being used to create a makerspace, not an encyclopedia, so we will need our own set of rules. We can go over this the next time we see each other.

I was considering creating several [https://en.wikipedia.org/wiki/Wikipedia:Navigation_template#Types navigation sidebars] to help tie pages together. As a first step, I started the categories.

I have added my email address to my user page. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 22:23, 22 January 2018 (EST)

How do I use Slack? [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 20:11, 25 January 2018 (EST)
:I'll send you an invite. It's a group chat app. You join "channels", each of which is a topic. It would be great if you joined #crm and #it, and any others you are interested in. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])
::I created a Slack account, then I got the message, "There is no application set to open the URL slack://T85FQLBED/magic-login/305039282100-4ee7856c99a45ad78b12da786f7c79284c3032a669e3139ead1c82271d23b742" [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 01:43, 26 January 2018 (EST)

==Wiki email not working==
I click on preferences, then on the User profile tab, I see my email address. I click on "Confirm your email address," and it takes me to the "Confirm email address" page. I click on "Mail a confirmation code," and it takes me to the "Confirm email address" page, which says, "Confirmation email sent." I check my email, but see nothing.

Has email been configured on the server?

I will watch this spot for your response. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 11:40, 23 January 2018 (EST)

:Hmmm. I did something similar and it worked for me. We're paying for hosting and I routinely get emails when pages I'm watching are changed.
:Next step is to have someone else try to validate their email from their User/Preferences to see if it's a general problem. I'll try that myself whenever I get some time. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])

==Scribunto==
I attempted to create some navigation templates to help find things. I copied the Template:sidebar from Wikipedia. It does not work, because it depends upon a number of missing items, including the extension Scribunto, which allows executing Lua scripts.

I also noticed that there were no help files. In fact, most of the namespaces are empty. We will have to spend some time, figuring out what is missing, and what do do about it.

I will watch this spot for your response. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 11:40, 23 January 2018 (EST)

Interesting. Without help files, I wonder if this is for us. I hate to have something take time because it isn't well documented. There are lots of extensions to MediaWiki and each one we add can make upgrading to the next version of MediaWiki that much harder. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])

Extensions make the product modular. Instead one huge all-or-nothing program, they have a simpler and more manageable program, with extensions. The trick is figuring out which extensions to use. MediaWiki is quite stable and upgrading is very conservative, including code review. Wikipedia is a high profile target to pranksters and criminals, so stability is important.

I suggest reaching out to our membership, and asking for MediaWiki help. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 15:13, 25 January 2018 (EST)

I agree with you about MediaWiki. The extensions, however, can be all over the map in terms of quality. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])

I would not use anything that is not used by Wikipedia. I have been looking at help files, and wikipedia has hundreds. I have found the list of help files and modules. The ones that are important to the functioning of Wikipedia are locked from editing, and would be good to use.
:I'd like to enable a visual editor, but when I looked into those extensions I found a lot of caveats and documented issues. Wikipedia uses one, but I imagine they are able to put the resources in to keep it running. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])
::Most of the editors did not like the visual editor, and insisted that it not be enabled by default. Wikitext takes time to learn, but has many advantages. Have you ever gone through countless dialog boxes in a word processor trying to determine why two blocks of text are slightly different? [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 22:20, 25 January 2018 (EST)

I have never attempted to install Mediawiki, so you are way ahead of me there. Do you have documentation of how you installed or configured it?
: Our host service CiviHost did the install for us. I did it once before on another machine. I had to unpack a bunch of files and then it was pretty easy to do the rest of the install. Many options require modification of their config file in the root of the installation. If you google wikimedia config I think you'll find the page. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])
::Did the host service document what they did? [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 22:20, 25 January 2018 (EST)
::It sound like you are using CiviCRM already. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 22:20, 25 January 2018 (EST)

I like the Collaboration Tools section in [[Maker Nexus operating teams]]. I think it extremely important to pick the right set of communication tools early on, and to provide training and support for the selected tools. I have been a Basecamp administrator for several years, and if you like, I can share my experiences with you. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 18:56, 25 January 2018 (EST)

==Ventilation==
I add the ventilation requirements to [[Fork lift charger]], however, reference tags and citations don't work. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 00:20, 20 February 2019 (EST)

==Page needs updating==
Does Maker Nexus have a more recent graphic for the page [[ERP System]]? [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 17:46, 26 July 2023 (EDT)
Not yet. [[User:Jschrempp|Jschrempp]] ([[User talk:Jschrempp|talk]])

==Blade guard and sled==
You mentioned that I may have misinterpreted what the instruction manual meant to say. I went back and reread the manual. Here is what I found:

The SawStop operating manual says: "Use the blade guard and spreader for every operation for which it can be used, including all through-sawing." Obviously, the blade guard cannot be used with a sled or with some jigs. However, every time I have seen our saw being used without the blade guard, the blade guard could have been used, but wasn't.

I think that Maker Nexus could be held responsible for an injury if we allowed the saw to be commonly used in contravention of the manufacturer's operating manual. [[User:Frankst|Frankst]] ([[User talk:Frankst|talk]]) 00:41, 4 August 2023 (EDT)

Amilia

2023-08-03T19:32:42Z

Frankst: +link

In 2023 we did a pretty thorough evaluation of Amilia by SmartRec for our makerspace. Here are a few things we learned.

* Machine Reservations: We made each machine a Facility in Amilia. The presentation to our users was the best of all options. The downside is that we can't limit reservations to members or to members with certain Skills. Amilia is considering an enhancement to add this feature. We'll deal with this by exception.
** Activities? We considered making each machine an Activity. They can be restricted to only members with specified Skills. Activities can also be tied to a Facility so that when the Activity is scheduled the Facility is also booked. However, Amilia required us to pre-populate every possible reservation slot (a lot of work) and those pre-populated slots would book the Facility, even if no member has booked the slot. Also, from a member perspective the user interface for Activities with reservation slots every hour of every day is pretty ugly to deal with.
** Private Lessons? Another option. We'd make each machine both a Staff member. Signing up for a private lesson would book the Staff member. The end user interface for Private Lessons is not bad, but we could not limit it to members or members with certain Skills.
** Multi-Pass? A way to make the checkout easier when reserving equipment and to control how many times a member could book a piece of equipment in a week. However, they do not auto-renew so we'd have to reissue them every week.
In the end, using Facilities is the best way to go for us.

* Memberships: Pretty robust feature set. We use Subscriptions that renew every month and can only be cancelled by contacting us.

* Classes: These are Activities in Amilia. Our training team really likes the feature set. (They've been using Activity Hero.) Classes are grouped by Program. We set up a Program named "catalog" and put every class we offer in it. Each quarter we will copy the "catalog" program to a Program with a name like "Winter 2023". Then we'll set up schedules for each class and make those without scheduled sessions "hidden". When ready we'll make Winter 2023 "visible" in our Amilia Store.

* Store: Everything gets sold through an Amilia branded web page called our Store. Our logo is there, but so is Amilia's. We can embed the main store widget in our website in an iframe and that makes it look more like ours, but the customization of that embedded widget is limited. However, each class and membership (and Facility for that matter) has a deep link you can discover and use that on your webpage if you prefer. Those links will have to be refreshed as you schedule new Classes; they provide an API for doing this. The link will take a user directly to the correct web page in the our Store. It's not perfect, but will work for us.

* API: They offer a read-only API with robust security. You can use the API to get info on members, programs, facilities, etc, etc, etc. They also have webhooks that can call out to your own website for processing of certain events (such as a new membership being sold).

==External links==
*[https://www.amilia.com/about About Amilia]

User talk:Jschrempp

2023-07-26T21:46:38Z

Frankst: erp system

User:Frankst

2023-07-26T20:34:03Z

Frankst: +erp

I have been a lifetime member of Techshop, and I certainly got my money's worth. Although I rarely went to Techshop, it was available to me when I needed it. I am also a member of Hacker Dojo, and Biocurious. I am a supporter of noisebridge and cc lab.

I like to teach and learn by working on projects with others. A project I would like to work on with others is creating and improving a maker space.

*'''MediaWiki version:''' {{CURRENTVERSION}}
*'''Content articles:''' {{NUMBEROFARTICLES}}
*'''Total pages:''' {{NUMBEROFPAGES}}
*'''Uploaded files:''' {{NUMBEROFFILES}}
*'''Edits:''' {{NUMBEROFEDITS}}
*'''[[Wikipedia:Wikipedians|Registered users]]:''' {{NUMBEROFUSERS}}<br> ({{NUMBEROFACTIVEUSERS}} active in the past month)<br>and {{NUMBEROFADMINS}} [[Wikipedia:Administrators|administrators]]

==Skills==
My skills include:

*Carpentry, plumbing, installing sheetrock, painting
*Editing Wikipedia
*Know many programming languages
*Constructing computer hardware
*Computer networking, including firewalls
*Extensive use of SQL
*CiviCRM
*BaseCamp administrator
*Knowledge of good safety practices
*Designed and installed an access control system, including a magnetic lock and panic bar
*Qualified to operate most of the equipment in Techshop
*Although I am not a licensed electrician, I can wire to the Uniform Electrical Code
*Basic accounting
*Problem solving

==Opinions==
Techshop failed to make use of volunteers or to create community. Volunteering provides an opportunity for members to get to know each other, help each other, and learn from each other. However, volunteers must be managed. I do not feel comfortable volunteering, without some supervision. I hope Makernexus makes good use of volunteers.

==MediaWiki==
*Makernexus is running MediaWiki <br />version {{CURRENTVERSION}}.
*It has {{NUMBEROFARTICLES}} content articles,<br /> and {{NUMBEROFPAGES}} pages in total.
*There have been {{NUMBEROFEDITS}} edits.
*There are {{NUMBEROFFILES}} uploaded files.
*There are {{NUMBEROFUSERS}} registered users,
**including {{NUMBEROFADMINS}} administrators.

*<small>This information as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC)</small>

==Handy links==
*[[wiki|Comments about Media Wiki and ideas of how nexus might best use it]]
*[[Special:AllPages|All pages]]
*[[Special:Categories|All categories]]
*[https://en.wikipedia.org/wiki/Help:Section#Creation_and_numbering_of_sections Formatting sections]
*[https://www.makernexus.com makernexus], which as of January 24, 2018, was a blank page. As of August 14, 2018, the page worked properly.
*[https://www.mediawiki.org/wiki/Security_issues_with_authorization_extensions Wiki security issues]
*[https://makernexuswiki.com/wiki/CiviCRM CiviCRM]
*[https://www.makernexus.org/the-team Our Team]
*[[ERP_System]]

==Contacting me==
*For non confidential communications, please leave a message on my talk page.
*For private communication, email me at frankst@nym.hush.com

==Namespaces==
{{Namespaces}}
<! {{About Wikipedia}} >
<br>list2 =
*<small>Data as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC).</small>
*<small>{{purge|Update}}</small>

User:Frankst

2023-07-26T20:17:27Z

Frankst:

I have been a lifetime member of Techshop, and I certainly got my money's worth. Although I rarely went to Techshop, it was available to me when I needed it. I am also a member of Hacker Dojo, and Biocurious. I am a supporter of noisebridge and cc lab.

I like to teach and learn by working on projects with others. A project I would like to work on with others is creating and improving a maker space.

*'''MediaWiki version:''' {{CURRENTVERSION}}
*'''Content articles:''' {{NUMBEROFARTICLES}}
*'''Total pages:''' {{NUMBEROFPAGES}}
*'''Uploaded files:''' {{NUMBEROFFILES}}
*'''Edits:''' {{NUMBEROFEDITS}}
*'''[[Wikipedia:Wikipedians|Registered users]]:''' {{NUMBEROFUSERS}}<br> ({{NUMBEROFACTIVEUSERS}} active in the past month)<br>and {{NUMBEROFADMINS}} [[Wikipedia:Administrators|administrators]]

==Skills==
My skills include:

*Carpentry, plumbing, installing sheetrock, painting
*Editing Wikipedia
*Know many programming languages
*Constructing computer hardware
*Computer networking, including firewalls
*Extensive use of SQL
*CiviCRM
*BaseCamp administrator
*Knowledge of good safety practices
*Designed and installed an access control system, including a magnetic lock and panic bar
*Qualified to operate most of the equipment in Techshop
*Although I am not a licensed electrician, I can wire to the Uniform Electrical Code
*Basic accounting
*Problem solving

==Opinions==
Techshop failed to make use of volunteers or to create community. Volunteering provides an opportunity for members to get to know each other, help each other, and learn from each other. However, volunteers must be managed. I do not feel comfortable volunteering, without some supervision. I hope Makernexus makes good use of volunteers.

==MediaWiki==
*Makernexus is running MediaWiki <br />version {{CURRENTVERSION}}.
*It has {{NUMBEROFARTICLES}} content articles,<br /> and {{NUMBEROFPAGES}} pages in total.
*There have been {{NUMBEROFEDITS}} edits.
*There are {{NUMBEROFFILES}} uploaded files.
*There are {{NUMBEROFUSERS}} registered users,
**including {{NUMBEROFADMINS}} administrators.

*<small>This information as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC)</small>

==Handy links==
*[[wiki|Comments about Media Wiki and ideas of how nexus might best use it]]
*[[Special:AllPages|All pages]]
*[[Special:Categories|All categories]]
*[https://en.wikipedia.org/wiki/Help:Section#Creation_and_numbering_of_sections Formatting sections]
*[https://www.makernexus.com makernexus], which as of January 24, 2018, was a blank page. As of August 14, 2018, the page worked properly.
*[https://www.mediawiki.org/wiki/Security_issues_with_authorization_extensions Wiki security issues]
*[https://makernexuswiki.com/wiki/CiviCRM CiviCRM]
*[https://www.makernexus.org/the-team Our Team]

==Contacting me==
*For non confidential communications, please leave a message on my talk page.
*For private communication, email me at frankst@nym.hush.com

==Namespaces==
{{Namespaces}}
<! {{About Wikipedia}} >
<br>list2 =
*<small>Data as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC).</small>
*<small>{{purge|Update}}</small>

User:Frankst

2023-07-26T19:58:46Z

Frankst: fix broken url

I have been a lifetime member of Techshop, and I certainly got my money's worth. Although I rarely went to Techshop, it was available to me when I needed it. I am also a member of Hacker Dojo, and Biocurious. I am a supporter of noisebridge and cc lab.

I like to teach and learn by working on projects with others. A project I would like to work on with others is creating and improving a maker space.

*'''MediaWiki version:''' {{CURRENTVERSION}}
*'''Content articles:''' {{NUMBEROFARTICLES}}
*'''Total pages:''' {{NUMBEROFPAGES}}
*'''Uploaded files:''' {{NUMBEROFFILES}}
*'''Edits:''' {{NUMBEROFEDITS}}
*'''[[Wikipedia:Wikipedians|Registered users]]:''' {{NUMBEROFUSERS}}<br> ({{NUMBEROFACTIVEUSERS}} active in the past month)<br>and {{NUMBEROFADMINS}} [[Wikipedia:Administrators|administrators]]

==Skills==
My skills include:

*Carpentry, plumbing, installing sheetrock, painting
*Editing Wikipedia
*Know many programming languages
*Constructing computer hardware
*Computer networking, including firewalls
*Extensive use of SQL
*CiviCRM
*BaseCamp administrator
*Knowledge of good safety practices
*Designed and installed an access control system, including a magnetic lock and panic bar
*Qualified to operate most of the equipment in Techshop
*Although I am not a licensed electrician, I can wire to the Uniform Electrical Code
*Basic accounting
*Problem solving

==Opinions==
Techshop failed to make use of volunteers or to create community. Volunteering provides an opportunity for members to get to know each other, help each other, and learn from each other. However, volunteers must be managed. I do not feel comfortable volunteering, without some supervision. I hope Makernexus makes good use of volunteers.

==MediaWiki==
*Makernexus is running MediaWiki <br />version {{CURRENTVERSION}}.
*It has {{NUMBEROFARTICLES}} content articles,<br /> and {{NUMBEROFPAGES}} pages in total.
*There have been {{NUMBEROFEDITS}} edits.
*There are {{NUMBEROFFILES}} uploaded files.
*There are {{NUMBEROFUSERS}} registered users,
**including {{NUMBEROFADMINS}} administrators.

*<small>This information as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC)</small>

==Handy links==
*[[wiki|Comments about Media Wiki and ideas of how nexus might best use it]]
*[[Special:AllPages|All pages]]
*[[Special:Categories|All categories]]
*[https://en.wikipedia.org/wiki/Help:Section#Creation_and_numbering_of_sections Formatting sections]
*[https://www.makernexus.com makernexus], which as of January 24, 2018, was a blank page. As of August 14, 2018, the page worked properly.
*[https://www.mediawiki.org/wiki/Security_issues_with_authorization_extensions Wiki security issues]
*[https://makernexuswiki.com/wiki/CiviCRM CiviCRM]

==Contacting me==
*For non confidential communications, please leave a message on my talk page.
*For private communication, email me at frankst@nym.hush.com

==Namespaces==
{{Namespaces}}
<! {{About Wikipedia}} >
<br>list2 =
*<small>Data as of {{CURRENTTIME}}, {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}} (UTC).</small>
*<small>{{purge|Update}}</small>

SawStop Professional 3HP Table Saw

2023-07-21T22:08:16Z

Frankst: spelling

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includes a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===Not completely safe===
The SawStop manufacturer's marketing materials exaggerate the safety of their saw. The marketing materials show fingers with nothing but a slight nick. They do not show more serious injuries, such as what happened in Rex Krueger's video. Instead of striking the blade from the front, his left thumbnail touched the side of the blade, which suddenly pulled the rest of his thumb into alignment with the blade. The safety system saved his thumb, but he still needed stitches in an emergency room. The accident would not have happened if he had been using the blade guard.

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
After the power is shut off, the StopSaw blade continues to spin for about 8 seconds, remaining hazardous. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw.
# Identify how it was triggered—check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging—youtube if you need help).
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance).
# Install new cartridge & blade—check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well—especially if people don't check when changing blades.
# Fill out a Sawstop trigger report and give it to a manager.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-04-06T05:22:45Z

Frankst: punctuation

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===Not completely safe===
The SawStop manufacturer's marketing materials exaggerate the safety of their saw. The marketing materials show fingers with nothing but a slight nick. They do not show more serious injuries, such as what happened in Rex Krueger's video. Instead of striking the blade from the front, his left thumbnail touched the side of the blade, which suddenly pulled the rest of his thumb into alignment with the blade. The safety system saved his thumb, but he still needed stitches in an emergency room. The accident would not have happened if he had been using the blade guard.

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
The StopSaw blade continues to spin for about 8 seconds, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw.
# Identify how it was triggered—check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging—youtube if you need help).
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance).
# Install new cartridge & blade—check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well—especially if people don't check when changing blades.
# Fill out a Sawstop trigger report and give it to a manager.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-04-06T04:55:52Z

Frankst: update time

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===Not completely safe===
The SawStop manufacturer's marketing materials exaggerate the safety of their saw. The marketing materials show fingers with nothing but a slight nick. They do not show more serious injuries, such as what happened in Rex Krueger's video. Instead of striking the blade from the front, his left thumbnail touched the side of the blade, which suddenly pulled the rest of his thumb into alignment with the blade. The safety system saved his thumb, but he still needed stitches in an emergency room. The accident would not have happened if he had been using the blade guard.

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
The StopSaw blade continues to spin for about 8 seconds, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.
# Fill out a Sawstop trigger report and give it to a manager.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-19T09:32:55Z

Frankst: not that safe

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===Not completely safe===
The SawStop manufacturer's marketing materials exaggerate the safety of their saw. The marketing materials show fingers with nothing but a slight nick. They do not show more serious injuries, such as what happened in Rex Krueger's video. Instead of striking the blade from the front, his left thumbnail touched the side of the blade, which suddenly pulled the rest of his thumb into alignment with the blade. The safety system saved his thumb, but he still needed stitches in an emergency room. The accident would not have happened if he had been using the blade guard.

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-18T07:54:31Z

Frankst: leave out junk

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Use 3/8" stock (see note), cut two runners to a about 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), and run it across the table to cut the kerf. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or Medium-density fiberboard (MDF) for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like poly vinyl chloride (PVC) (or ultra high molecular weight (UHMW) polyethylene! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-18T07:41:08Z

Frankst: replace acronym with words

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''To be written...''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-18T07:40:28Z

Frankst: replace acronym with words

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''To be written...''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-18T07:39:55Z

Frankst: replace acronym with words

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''To be written...''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-10T00:25:08Z

Frankst: remove confusing statement.

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-10T00:20:50Z

Frankst: spelling

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two or three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T23:47:45Z

Frankst: fit better

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|left|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T23:44:45Z

Frankst: fix links

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|200px|Owner's Manual]]

[[File:SawStopWarnings.png |link=https://makernexuswiki.com/images/6/6d/SawStopWarnings.pdf |thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png |link=https://makernexuswiki.com/images/4/49/SawStopSafety.pdf |thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:SawStopSafety.pdf

2023-02-06T23:40:05Z

Frankst: Safety

== Summary ==
Safety

File:SawStopWarnings.pdf

2023-02-06T23:38:02Z

Frankst:

SawStop Professional 3HP Table Saw

2023-02-06T23:24:51Z

Frankst: smaller

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|200px|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|200px|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|200px|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T19:26:25Z

Frankst: remove duplicate link

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T19:24:33Z

Frankst: fix link

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopIcon.png|link=https://makernexuswiki.com/images/5/59/Manual_PCS_300_2.pdf|thumb|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:SawStopIcon.png

2023-02-06T19:16:37Z

Frankst: Icon for Saw Stop manual

== Summary ==
Icon for Saw Stop manual

SawStop Professional 3HP Table Saw

2023-02-06T06:18:33Z

Frankst: spacing

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[:File:Manual PCS 300 2.pdf|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T06:17:07Z

Frankst: describe pages

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[:File:Manual PCS 300 2.pdf|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

The SawStop owner's manual includes two pages of warnings and two pages of safety information.

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T06:11:39Z

Frankst: could have been worse

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===
The photos from a YouTube video show an actual injury to woodwork Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a well designed blade guard. Rex said that his injury would have been much worse, if it were not for the safety features of his SawStop.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[:File:Manual PCS 300 2.pdf|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T06:05:48Z

Frankst: injury details

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Accidental blade contact===

[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex had an ''irregular laceration of the tip of the thumb''. Two of three teeth of the blade penetrated his thumb nail and flesh to about 2 cm.

Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake. Rex advised spending $300 for an overarm dust collector, which includs a blade guard.

===Blade guard===
The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[:File:Manual PCS 300 2.pdf|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-06T04:29:12Z

Frankst: thumb does not work

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[:File:Manual PCS 300 2.pdf|Owner's Manual]]

[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

''To be written''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-05T22:15:06Z

Frankst: +manual

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]

[[File:Manual PCS 300 2.pdf]]

[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:Manual PCS 300 2.pdf

2023-02-05T22:04:34Z

Frankst: SawStop owner manual

== Summary ==
SawStop owner manual

SawStop Professional 3HP Table Saw

2023-02-05T22:00:11Z

Frankst:

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopSafety.png|thumb|SawShop Safety]]
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-05T21:57:22Z

Frankst: +warnings and safety documentation

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[[File:SawStopWarnings.png|thumb|SawShop Warnings]]
[[File:SawStopWarnings.png|thumb|SawShop Safety]]
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:SawStopWarnings.png

2023-02-05T21:51:33Z

Frankst:

== Summary ==
SawStop warnings from user manual

File:SawStopSafety.png

2023-02-05T21:50:46Z

Frankst: SawStop safety from user manual

== Summary ==
SawStop safety from user manual

File:SawStopWarnings.png

2023-02-05T21:49:25Z

Frankst: SawStop warnings in user manual

== Summary ==
SawStop warnings in user manual

SawStop Professional 3HP Table Saw

2023-02-05T05:39:20Z

Frankst: +link

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.sawstop.com StopSaw company's home page]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-05T01:58:28Z

Frankst: c/e

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

==Description==
StopSaw is a high quality table saw, with the added ability to stop before it amputates a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T17:04:21Z

Frankst: rate

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year, averaging once every 15 minutes.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before it cuts off a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T16:50:59Z

Frankst: c/e

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard on SawStop]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before it cuts off a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T16:39:31Z

Frankst: use the router

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells how the accident happened and what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his painful mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife on the table saw, or use a router instead of the table saw.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done using the saw.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before it cuts off a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T16:20:59Z

Frankst: a trip to emergency is serious

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before it cuts off a finger. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin. You may not loose a finger, but you will need medical treatment in an emergency room.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T11:25:23Z

Frankst: c/e

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
Blade guards are designed to protect workers from injury. Properly designed blade guards do not create a new hazards:

'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it <span style="color:red">does not offer an accident hazard</span> in itself.

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before a serious injury occurs. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The operator suffers a minor instead of serious injury. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T11:11:05Z

Frankst: c/e

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 450px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it '''does not offer an accident hazard in itself.'''

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before a serious injury occurs. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The operator suffers a minor instead of serious injury. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

File:BladeGuard.png

2023-02-04T11:09:32Z

Frankst: Frankst uploaded a new version of File:BladeGuard.png

== Summary ==
Blade guard used by SawStop

SawStop Professional 3HP Table Saw

2023-02-04T10:44:48Z

Frankst:

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 400px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it '''does not offer an accident hazard in itself.'''

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before a serious injury occurs. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The operator suffers a minor instead of serious injury. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

===Specifications===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T10:43:45Z

Frankst: c/e

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 400px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it '''does not offer an accident hazard in itself.'''

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before a serious injury occurs. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The operator suffers a minor instead of serious injury. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

=== Specifications ===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical power requirments: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">

===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.

SawStop Professional 3HP Table Saw

2023-02-04T10:40:54Z

Frankst: clarify

[[File:Sawstop_full_image.jpg|400px|thumb|right|SawStop PCS31230 Professional 3HP 52" Fence Table Saw]]

==Safety==
[[File:Photo of bandaged thumb.png|200px|thumb|right|Bandaged thumb waiting in emergency room]]
[[File:Photo of side of thumb.png|200px|thumb|right]]
[[File:Photo of end of thumb.png|200px|thumb|right|Stiches required to repair thumb injured by a SawStop operated without a blade guard]]

Table saws are one of the most dangerous machines in a shop. According to the Consumer Product Safety Commission, 38,000 or more serious accidents occur each year.

Table saws are especially dangerous because the operator holds the material being cut, instead of the saw, making it easy to accidentally move hands into the spinning blade. In contrast, when using portable circular saws, the material remains stationary, as the operator guides the saw into the material.

===Blade guard===
[[File:BladeGuard.png|300px|thumb|right|Blade guard]]
The photos from a YouTube video show an actual injury to Rex Krueger's thumb caused by improper use of a StopSaw. He did not loose his thumb, but he did require medical treatment in an emergency room. Rex attributes his injury to his failure to use a blade guard. A link to the video is in the section [[#External_links|External links]]. The video tells what Rex felt when the blade struck his thumb. Rex made the video to help others avoid his mistake.

The table saw at Maker Nexus is equipped with two important safety devices, a blade guard and a riving knife. One or the other of these safety devices must be used at all times:

*Using the blade guard is one of the most important steps you can take to prevent injury. Many table saw injuries occur when the blade guard is either not being used or not being used properly. The blade guard covers the blade, and lifts up just enough to allow your material to slide into the blade. The blade guard can be used only for cuts that go all the way through the material. For cuts that do not go all the way through your material, use the riving knife.

*The riving knife should be used for cuts that do not go all the way through material, such as dado cuts, grooves, and rabbet cuts, or extremely narrow cuts. When you finish using the riving knife, replace it with the blade guard.

*Injuries often occur because the blade guard is removed for a special job, but the blade guard remains off after the job is finished. If you remove a blade guard, put it back when you get done.

The manufacturer of the SawStop includes the following warning in the saw's user manual:

<div style="
border: 3px solid black;
padding: 2px 6px 2px 6px;
font-weight: bold;
width: 400px;
>WARNING! Use the blade guard and spreader for every operation for which it can be used, including all through-sawing.</div>

===OSHA requirment===
'''1910.212(a)(2)''' General requirements for machine guards.

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible.

The guard shall be such that it '''does not offer an accident hazard in itself.'''

===Spinning blade===
European table saws have braking devices to stop the blade within 10 seconds of shutting off power. StopSaw has no such safety device. The StopSaw blade continues to spin for much longer, creating a hazard after power is shut off. Be sure to wait for the blade to completely stop, before moving materials or adjusting the saw.

==Training requirements==
{{AllSafetyRulesApply}}
{{RequiresBOSS|class=Woodshop I - table saw, jointer, planer, miter saw}}

== Description ==
StopSaw is a high quality table saw, with the added ability to stop before a serious injury occurs. Because of the high resistance of human skin, the blade will not stop, until it has broken through skin.

As stated in Wikipedia, the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. The operator suffers a minor instead of serious injury. The design takes advantage of the difference in conductance and capacitance between wood and flesh.

An oscillator generates a 12-volt, 200-kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The signal is transferred to the blade by capacitive coupling. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. If a human contacts the blade, the signal will fall below the threshold. After signal loss for 25 micro seconds (µs), the detector will fire. A tooth on a 10-inch circular blade rotating at 4000 RPM will stay in contact with the approximate width of a fingertip for 100 µs. The 200-kHz signal will have up to 10 pulses during that time, and should be able to detect contact with just one tooth. When the brake activates, a spring pushes an aluminum block into the blade. The block is normally held away from the blade by a wire, but during braking an electric current instantly melts the wire, similar to a fuse blowing.

=== Specifications ===
[https://drive.google.com/file/d/10xqF_zh-qKj8KfkH4YvFCU-xm0J8e6GP/view?usp=sharing Specs (Google Drive)]

* ''Electrical spec: ''
::'''230 Volts, 60 Hz'''
::'''13 Amps'''
::'''1 Phase'''

<div class="toccolours mw-collapsible mw-collapsed">
===MN Asset Details===
<div class="mw-collapsible-content">
[[File: SawStop_PCS31230_Table_Saw_SN.jpg |300px|thumb|right|SawStop PCS31230 Serial Number Plate]]
* ''Location: '' '''Wood Shop'''
* ''Model Number: '' '''PCS31230'''
* ''Serial Number: '' '''P180530850'''
* ''MN Asset Number: '' not assigned
<br clear="all">
</div></div>

''TBW''

==Documentation==
[https://www.sawstop.com/images/uploads/manuals/PCS%20Owners%20Manual%20Model%20PCS31230%20V5.0%2009-13.pdf Owner's Manual]

[https://drive.google.com/file/d/1qEIYvrXfbUdeDSD2rpKKYbPwyxJ2sz1N/view?usp=sharing Owner's Manual (Google Drive)]

''TBW''

==Materials, Tooling, Accessories==
''TBW''

==Settings==
''TBW''

==Tips and tricks==
===Laser-cut plywood===
Do not use the SawStop table saw to cut plywood, after it has been cut by a laser, because the laser carbonizes wood, and carbonized wood is conductive.

===Crosscut sled===
Making a new sled is pretty straightforward. Just grab some 3/8" stock (see note), cut two runners to a smidge proud of 3/4" with the table saw blade at an angle, affix to a flat piece, put on a back plate (the one tricky bit; as close to perpendicular as you can get it!), run it across the table to cut the kerf, and Bob's your uncle. The one that we had before used metal runners, which are very nice, but not at all necessary for most jobs.

Note on materials: Plywood or MDF for the base is standard and works great. For the runners, solid wood is oddly enough a poor choice here, because it will expand/contract by its grain. Plywood works alright for runners if you orient their cut such that any expansion tends to pull the sled tighter to the table, but MDF is better. Unfortunately, MDF generally doesn't typically come in 3/8", so needs to be pulled down to the proper size. Best is something like PVC (or UHMW PE! Super slide-y!) that won't expand/contract in response to temperature or humidity. But please don't build the base out of plastic, especially a low-temperature one like UHMW, as it will potentially melt onto the blade.

Back to [[MN-S Wood Shop]] Equipment List

===Replacing cartridge===
Follow these steps to replace a cartridge:
# Ensure everyone is safe. Check for cuts, scrapes, however minor.
# Unplug saw
# Identify how it was triggered - check what jigs, if any, were being used. Figure out where in the cut it stopped. Take pictures of setup and position as best you can so we can address any safety issues. Take pictures of material where cut was happening.
# Remove SawStop cartridge and blade (they will be locked together, this can be challenging - youtube if you need help)
# Notify member they will be invoiced for cost of cartridge and sawblade unless we are able to show it was not their fault (sometimes it isn't, but that's about a <1% chance)
# Install new cartridge & blade - check and confirm proper spacing between blade & cartridge with yellow spacer. Err on the open side - too close can accidentally trigger the sawstop feature as well - especially if people don't check when changing blades.

==External links==
*[https://en.wikipedia.org/wiki/SawStop SawStop article on Wikipedia]
*[https://www.youtube.com/watch?v=1wJQn_UGAKY Sawstop Injury I didn't think this could happen], Rex Krueger's video describing his actual StopSaw injury
*[https://www.cpsc.gov/s3fs-public/statsaws.pdf Survey of Injuries Involving Stationary Saws—Table and Bench Saws], U.S. Consumer Product Safety Commission
*[https://www.robsonforensic.com/articles/table-saw-guards-expert-introduction-to-table-saw-safety Table Saw Guards—Expert Introduction to Table Saw Safety], skill and experience do not provide adequate protection
*[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154236/ Table saw injuries: epidemiology and a proposal for preventive measures], many injuries to students
*[https://www.felder-group.com/WEB/Press/Popular%20Woodworking_05_20_European%20Saws.pdf What You Don’t Know About European Saws], cost more, but include more accessories.