MN 3D Printers - Revision history

Jschrempp: /* Equipment Training Documents */

2026-05-26T18:31:30Z

Equipment Training Documents

← Older revision		Revision as of 14:31, 26 May 2026
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	=== Equipment Training Documents===		=== Equipment Training Documents===
	*[https://docs.google.com/document/d/~~1RRtpL_ArT8bmhTwsHfWM0S00QUXDS4GYwntXJ3arVms~~/edit?tab=t.0 3D Printing with Prusa FDM Printers]		*[https://docs.google.com/document/d/1vdW1s18Hb9kK5esf6CbvBxBls9iI3xm39ZJR1RvEbtA/edit?tab=t.0 3D Printing with Prusa FDM Printers]
	*[https://docs.google.com/document/d/1oATjCNQYaHCrVBjNqSAHyeLIDqMVk16OgbEXNvUa9I4/edit?tab=t.0 Resin 3D Printing with Form 3]		*[https://docs.google.com/document/d/1oATjCNQYaHCrVBjNqSAHyeLIDqMVk16OgbEXNvUa9I4/edit?tab=t.0 Resin 3D Printing with Form 3]

HaleyM: /* Big ball of plastic on the extruder of Prusa */

2025-07-14T22:28:12Z

Big ball of plastic on the extruder of Prusa

← Older revision		Revision as of 18:28, 14 July 2025
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	If you have enough 3D printers, you might designate one printer for just PETG, to avoid this issue.		If you have enough 3D printers, you might designate one printer for just PETG, to avoid this issue.

	===Big ~~ball~~ of ~~plastic on the extruder of Prusa~~===		===Home Machine Maintenance - Big Globs of Plastic===

	A large ball of plastic attached itself to the nozzle and heat block, ~~and in removal~~, ~~the wires~~ for the ~~thermistor were damaged~~. ~~To clean up an issue like that, don~~'t try to remove the plastic while it is cold, you will break things every time. Typically, first thing to do is to remove the filament through a normal filament unload (preheat the nozzle ONLY - no need to preheat bed & unload filament). Then, raise the z axis so you have plenty of room to access the ball'o'plastic. Bring the nozzle temperature up to 30-40 degrees over your printing temperature. Be careful, this is obviously going to have hot plastic all over the place, and it sticks to skin. Wear gloves, use tools, do not try to grab plastic with your bare hand!!!		If you see a large ball of plastic attached itself to the nozzle and heat block, ask for help from a staff member! However, if you're looking for tips on fixing the on your home machine, here is a guide. PLEASE DO NOT ATTEMPT THIS ON A MAKER NEXUS MACHINE.

			Don't try to remove the plastic while it is cold, you will break things every time. Typically, first thing to do is to remove the filament through a normal filament unload (preheat the nozzle ONLY - no need to preheat bed & unload filament). Then, raise the z axis so you have plenty of room to access the ball'o'plastic. Bring the nozzle temperature up to 30-40 degrees over your printing temperature. Be careful, this is obviously going to have hot plastic all over the place, and it sticks to skin. Wear gloves, use tools, do not try to grab plastic with your bare hand!!!

	Once the hot end is at temperature, slowly begin pulling out loose plastic. What is contacting the hot end will get molten. Start scooping/pulling it out, push more plastic against the hot end, repeat. Be very careful of the wires attached to the hot end. There will be two sets, one for the heater cartridge, one for the thermistor. If you damage either, you'll be replacing them. Work the plastic blob into contact with the hot end until it starts to soften (as a blob). You can then try to start working larger chunks free, but again, don't force it, the wrapping for the thermistor, in particular, likes to bond to melted filament because it is a woven wrap. Some time and heat will free up the hot end. Once the majority is gone, cleaning up with a coarse paper towel that won't leave towel fibers is fairly easy. Again, it's HOT, be careful.		Once the hot end is at temperature, slowly begin pulling out loose plastic. What is contacting the hot end will get molten. Start scooping/pulling it out, push more plastic against the hot end, repeat. Be very careful of the wires attached to the hot end. There will be two sets, one for the heater cartridge, one for the thermistor. If you damage either, you'll be replacing them. Work the plastic blob into contact with the hot end until it starts to soften (as a blob). You can then try to start working larger chunks free, but again, don't force it, the wrapping for the thermistor, in particular, likes to bond to melted filament because it is a woven wrap. Some time and heat will free up the hot end. Once the majority is gone, cleaning up with a coarse paper towel that won't leave towel fibers is fairly easy. Again, it's HOT, be careful.

HaleyM: /* Materials Recommendations */

2025-07-14T22:26:03Z

Materials Recommendations

← Older revision		Revision as of 18:26, 14 July 2025
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	You must be logged in with your Maker Nexus Google account to view training documents.		You must be logged in with your Maker Nexus Google account to view training documents.

	=== Materials ~~Recommendations~~ ===		=== FDM Materials ===
	The three types of filament allowed on the open air printers are PLA, PETG and TPU. We also allow ABS, ASA, PC and HIPS printing on our single color enclosed MK3S. Other filaments are not allowed; see our [https://docs.google.com/document/d/1RRtpL_ArT8bmhTwsHfWM0S00QUXDS4GYwntXJ3arVms/ class handout] for more info. If you have a type of filament that isn't listed, visit the #3DPrinters channel on Slack to ask about it!		The three types of filament allowed on the open air printers are PLA, PETG and TPU. We also allow ABS, ASA, PC and HIPS printing on our single color enclosed MK3S. Other filaments are not allowed; see our [https://docs.google.com/document/d/1RRtpL_ArT8bmhTwsHfWM0S00QUXDS4GYwntXJ3arVms/ class handout] for more info. If you have a type of filament that isn't listed, visit the #3DPrinters channel on Slack to ask about it!

HaleyM: /* Materials Recommendations */

2025-07-14T22:25:33Z

Materials Recommendations

← Older revision		Revision as of 18:25, 14 July 2025
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	=== Materials Recommendations ===		=== Materials Recommendations ===
	~~Prusa has a nice~~ [https://~~help~~.~~prusa3d~~.com/en/~~materials materials guide~~] ~~with interesting information~~.		The three types of filament allowed on the open air printers are PLA, PETG and TPU. We also allow ABS, ASA, PC and HIPS printing on our single color enclosed MK3S. Other filaments are not allowed; see our [https://docs.google.com/document/d/1RRtpL_ArT8bmhTwsHfWM0S00QUXDS4GYwntXJ3arVms/ class handout] for more info. If you have a type of filament that isn't listed, visit the #3DPrinters channel on Slack to ask about it!

	Delrin? While it extrudes at typical temperatures, Delrin doesn't stick to any of the heat beds you normally find on FDM printers. Apparently it wants to be printed onto wood or cellulose in a sealed heated chamber. The Prusas have metal heat beds and are open air. There are some hacks for printing Delrin on metal beds, but they involve adhesives, and we don't allow those on our shop machines because they can damage the coatings that are already on the steel build plates.		Carbon fiber-filled PLA or PETG is very strong. It MUST be printed on a printer that has a hardened steel nozzle installed. For less aggressive filled filaments (glow in the dark, wood, matte etc.) please use a printer with the hardened steel nozzle if one is available.

	Carbon fiber-filled PLA or PETG is very strong. It ~~can~~ be printed ~~with one of our Prusas~~ that has the hardened steel nozzle ~~installed~~.

	=== Changing Filament ===		=== Changing Filament ===

HaleyM: /* Equipment Training Documents */

2025-07-14T21:46:34Z

Equipment Training Documents

← Older revision		Revision as of 17:46, 14 July 2025
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	=== Equipment Training Documents===		=== Equipment Training Documents===
	*[~~[BOSS~~ 3D Printing with Prusa ~~i3 MK3~~]]		*[https://docs.google.com/document/d/1RRtpL_ArT8bmhTwsHfWM0S00QUXDS4GYwntXJ3arVms/edit?tab=t.0 3D Printing with Prusa FDM Printers]
			*[https://docs.google.com/document/d/1oATjCNQYaHCrVBjNqSAHyeLIDqMVk16OgbEXNvUa9I4/edit?tab=t.0 Resin 3D Printing with Form 3]

			You must be logged in with your Maker Nexus Google account to view training documents.

	=== Materials Recommendations ===		=== Materials Recommendations ===

HaleyM: /* Print Time */

2025-07-14T21:42:55Z

Print Time

← Older revision		Revision as of 17:42, 14 July 2025
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	===Print Time===		===Print Time===
	~~Limit your print time on the XL and MK4 multimaterial printers to 48 hours.~~ We try to make sure that everyone at Maker Nexus can access the printers when they need them. After a 48 hour print, please leave the machine available to others for at least 24 hours before starting your next print.		We try to make sure that everyone at Maker Nexus can access the printers when they need them. Limit your print time on any individual printer to 48 hours. After a 48 hour print, please leave the machine available to others for at least 24 hours before starting your next print.
	If you need to use multiple rolls of filament to get your work finished within the time limit, you can set up SpoolJoin on the Multimaterial machines to automatically change to the next spool. Please don’t leave a print waiting for a filament change for long periods of time.
			If you need to use multiple rolls of filament to get your work finished within the time limit, you can set up SpoolJoin on the Multimaterial machines to automatically change to the next spool. Please don’t leave a print waiting for a filament change for long periods of time.

	== Slicers ==		== Slicers ==

HaleyM: /* Number of Printers */

2025-07-14T21:41:55Z

Number of Printers

← Older revision		Revision as of 17:41, 14 July 2025
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	===Number of Printers===		===Number of Printers===
	Limit the number of printers you use simultaneously. We ask that you use no more than:		Limit the number of printers you use simultaneously. We ask that you use no more than:
	* Two ~~of the small single color Prusa~~ printers. You can use up to 4 single color printers, so long as the print time of ~~all prints~~ is under 1 hour.
	* One Prusa XL, or:		* One reservable printer at a time (Prusa XL or Prusa MK4S+MMU)
	* One of the small multimaterial Prusas.		* Two printers total. You can use up to 4 single color printers, so long as the print time of each print is under 1 hour.

	===Print Time===		===Print Time===

HaleyM: /* FDM 3D Printers */

2025-07-14T21:39:41Z

FDM 3D Printers

← Older revision		Revision as of 17:39, 14 July 2025
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	**Loads Files From: USB Stick		**Loads Files From: USB Stick
	**Standard Nozzle Diameter: 0.4mm		**Standard Nozzle Diameter: 0.4mm
	**Multimaterial: Yes		**Multimaterial: Yes, with mixed filament types
	**Automatic Sheet Detection: Yes		**Automatic Sheet Detection: Yes
	**PrusaSlicer Profile: Original Prusa XL - 5T Input Shaper 0.4 nozzle		**PrusaSlicer Profile: Original Prusa XL - 5T Input Shaper 0.4 nozzle
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	**Loads Files From: USB Stick		**Loads Files From: USB Stick
	**Standard Nozzle Diameter: 0.4mm		**Standard Nozzle Diameter: 0.4mm
	**~~Multimaterial~~: Yes		**Multicolor: Yes, with same filament type
	**Automatic Sheet Detection: Yes		**Automatic Sheet Detection: Yes
	**PrusaSlicer Profile: Original Prusa MK4S MMU3 0.4 nozzle		**PrusaSlicer Profile: Original Prusa MK4S MMU3 0.4 nozzle

HaleyM at 21:38, 14 July 2025

2025-07-14T21:38:31Z

← Older revision		Revision as of 17:38, 14 July 2025
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	[[File:mn-filament.jpeg\|400px]]		[[File:mn-filament.jpeg\|400px]]

	==3D Printers ~~at Maker Nexus~~==		==FDM 3D Printers==

	* 8 [https://www.prusa3d.com/~~category~~/~~original-prusa-i3-mk3s~~/ Prusa i3 Mk3S+] printers ~~(build volume~~ 250 x ~~210~~ x ~~210~~ mm)		* 8 [https://www.prusa3d.com/downloads/manual/prusa3d_manual_mk3s_en_3_11.pdf Prusa i3 Mk3S+] printers
			** Build Volume: 250 x 200 x 200 mm
			**Loads Files From: SD Card
			**Nozzle Diameter: 0.4mm
			**Multimaterial: No
			**Automatic Sheet Detection: No
			**PrusaSlicer Profile: Original Prusa i3 MK3S & MK3S+ (0.4 nozzle)

	* 1 [https://www.prusa3d.com/~~product~~/~~original-prusa-xl~~/ Prusa XL] ~~printers (build volume~~ 360 x 360 x 360 mm)		* 1 [https://www.prusa3d.com/downloads/manual/prusa3d_manual_xl_104_en.pdf Prusa XL 5 Head Multimaterial] printer
			**Build Volume: 360 x 360 x 360 mm
			**Loads Files From: USB Stick
			**Standard Nozzle Diameter: 0.4mm
			**Multimaterial: Yes
			**Automatic Sheet Detection: Yes
			**PrusaSlicer Profile: Original Prusa XL - 5T Input Shaper 0.4 nozzle

	* 3 Prusa ~~MK4s~~ with ~~Multimaterial Upgrade~~ for multicolor printing ~~(build volume~~ 250 x 210 x 220 mm)		* 3 [https://www.prusa3d.com/downloads/manual/prusa3d_manual_mk4s_mk39s_101_en.pdf Prusa MK4S] printers with [https://www.prusa3d.com/downloads/manual/prusa3d_manual_mmu3_en_1_03.pdf MMU3] for multicolor printing
			**Build Volume: 250 x 210 x 220 mm
			**Loads Files From: USB Stick
			**Standard Nozzle Diameter: 0.4mm
			**Multimaterial: Yes
			**Automatic Sheet Detection: Yes
			**PrusaSlicer Profile: Original Prusa MK4S MMU3 0.4 nozzle

			==Resin 3D Printers==

	* 1 FormLabs Form 3 resin printer (build volume 14.5 × 14.5 × 19.3 cm)		* 1 FormLabs Form 3 resin printer (build volume 14.5 × 14.5 × 19.3 cm)

HaleyM at 19:38, 28 April 2025

2025-04-28T19:38:02Z

← Older revision		Revision as of 15:38, 28 April 2025
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	Some metallic-look filaments do not have fillers in them (these are generally called silk filaments). If you're unsure as to whether your filament has filler, run your hand over the plastic. Filled plastics will feel slightly rough.		Some metallic-look filaments do not have fillers in them (these are generally called silk filaments). If you're unsure as to whether your filament has filler, run your hand over the plastic. Filled plastics will feel slightly rough.

			==Use Resrictions==

			===Number of Printers===
			Limit the number of printers you use simultaneously. We ask that you use no more than:
			* Two of the small single color Prusa printers. You can use up to 4 single color printers, so long as the print time of all prints is under 1 hour.
			* One Prusa XL, or:
			* One of the small multimaterial Prusas.

			===Print Time===
			Limit your print time on the XL and MK4 multimaterial printers to 48 hours. We try to make sure that everyone at Maker Nexus can access the printers when they need them. After a 48 hour print, please leave the machine available to others for at least 24 hours before starting your next print.
			If you need to use multiple rolls of filament to get your work finished within the time limit, you can set up SpoolJoin on the Multimaterial machines to automatically change to the next spool. Please don’t leave a print waiting for a filament change for long periods of time.

	== Slicers ==		== Slicers ==