Ultimaker 2 Replacement Print Head

This is a print head for the Ultimaker 2.

3D printer parts and enhancements

Creative Commons Attribution Noncommercial Share Alike

Commercial use is not allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags


I created it after my second original print head got cracks.

It is a drop in replacement, you can use stock bearings.

The cables are fixed on the outside and the outer part is designed to be removed by only loosen the four screws.

The cables are fixed on the outside and the outer part is designed to be removed by only loosen the four screws.

Design is mostly influenced by https://www.youmagine.com/designs/modular-printhead-for-ultimaker2-v2-2 but I wanted a drop in replacement not changing the original size and shape too much and not to have to alter the firmware.

The 1.75mm version is meant to use a bowden coupling on the top. For example https://e3d-online.com/embedded-bowden-couplings-for-plastic-1-75mm-filament.



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


Mini rowiac avatarrowiac added this to the UMO Mods collection ago
C547b810270b9980d0200c7f15c58e0a?default=blank&size=40ThomasBe added this to the printer collection ago
0965c169ba1c150f23e9f9f9ba314b38?default=blank&size=40MartiW added this to the Ultimaker collection ago
51d182ced9e0d0efff5b4c72bddad7eb?default=blank&size=40maccew added this to the 3dprinter collection ago
E0e6ac36352b5a945b95dcd0fb06f445?default=blank&size=40JohsonChou commented ago

First printed with support, remains of support screwed up the fit.

printed without support, fits like a glove. There is no need for support, really.

50% Infill PLA. Made this to pressfit Igus 6mm bearings.

B58f03a2d2c73ca5ce3607b1a9064d22?default=blank&size=40cENz0R added this to the UM2 collection ago
88591ba5e59422d49d1685ff57e09a20?default=blank&size=40tuttoflash added this to the Ultimaker collection ago
06a2bc9834ed47914bbd74d242718ce4?default=blank&size=40Romulus Curtuzan added this to the Parts collection ago
4a8424db3e293813e96ffccb74165f81?default=blank&size=40LittleRP commented ago

I think the original files will be useful and I'd offer to try and open the gaps up a little and modify it for a heatset collet ring. I did try a cura print today and while it fit better, it still spreads the outside piece in order to close the gap. I tried decreasing the extrusion amount and had supports start failing so I'm not sure I'm overextruding much. Also shoudl you be able to remove the pieces with the bowden tube still in place, or does it need to be removed. With the 1.75mm version it seems like it needs to be removed just not sure on the intended function.

Mini profilbildAlexander Leisentritt commented ago

I don’t know the designed gap at the moment. Will look it up but I never had problems. Maybe check your extrsuion settings and reduce them a bit?

I am thinking of providing a model without the tube hole and tube mounting for someone else, I can upload here too for you to design that part yourself with your favourite CAD system...

4a8424db3e293813e96ffccb74165f81?default=blank&size=40LittleRP commented ago

Thanks for uploading the 1.75mm version, having some problems getting a good fit of the two halves when slicing with simplify3d, how big of a gap is there out of curiosity? I'll keep trying different things though such as cura (I have to really squeeze the halves together to get the m3 holes to line up).

Also might be nice to have a 1.75mm version geared towards the e3d embedded for metal bowden ring which can be embedded in plastic with heat pretty easy, I believe bondtech uses this fitting in their nylon and abs housings.

Mini avatarJonatan Rullman commented ago

Thanks a million. I'm probably still a couple of months away from 1.75. I have done a test fit of everything (with the original head) but I still have lots of 3mm filament to use up so I converted it back again.

Mini profilbildAlexander Leisentritt commented ago

No M6 but a bowden coupling, just uploaded and updated the design. See if it fits for you or get in private contact with me, then we can do something about the design files...

Mini avatarJonatan Rullman commented ago

That would be great.

If you don't use an M6 screw thread in your setup I could very easily just make a small plate on top to replace the spacers. But it would be excellent with a version that is made for a 4mm tube.

Mini profilbildAlexander Leisentritt commented ago

Actually I am running a 1.75 version of the head. I have to search it and will upload it to here. But I won't share CAD files in public. Sorry...

Mini avatarJonatan Rullman commented ago

Thanks. I did print it without supports in the end and it worked perfectly, the bearings was a very tight fit. Used PLA for now but I should print it in ABS later on.

I really like this head, much easier to mount than the original one. It seems to be working just as well too.

Any chance you could upload a cad file? I'm in the process of converting my printers to 1.75 and it would be great to add thread for the coupler and decrease the dimension of the hole for the bowden tube.

Mini profilbildAlexander Leisentritt commented ago

Working well here, didn't have to change yet again though I change the hotend three times.

I printed with Innofil ABS at 100 micron with support in the bearing holes of the inner part. The residue of the support make the bearings have a tight fit but that seems fine.

The outer part prints fine without support.

Mini avatarJonatan Rullman commented ago

Two years on, how do you feel that this design is working?

What settings did you use for it? I was having a hard time deciding if it needed supports or not.

5243c8eed82be8d1dc4fee62bcc0a5cc?default=blank&size=40bic2017 added this to the Equipement 3D collection ago
Mini 11754397 10206328150656315 4100330236590689548 obortek added this to the UM2 collection ago
0713fc717563d0668167c27ade52f10c?default=blank&size=40Roy Prawira added this to the 3D Printer collection ago
8f921f3c040c44b3226d53e1da3cf6bf?default=blank&size=40M.Schubert added this to the Ultimaker 2 collection ago
9808f7f0c2b2cdcaf10af6f167956e76?default=blank&size=40Leo Taylor added this to the Want to print collection ago
60c8691cedfcf939fc352716b43d5248?default=blank&size=40Chris Branson added this to the Printer Parts collection ago
Mini 20150514 1805293DRay added this to the Ultimaker 2 collection ago
Bcbf3000397afde5dd1875cf5476e84b?default=blank&size=40wowowaa added this to the Ultimaker collection ago
Mini dsc 0153Casey added this to the Ultimaker Accessories collection ago
Mini 1461277 10202460643192258 2836949160758693158 nLimolwali added this to the 3d printer tweaks collection ago
65a6d5f8c94e52a3ba6543b66d529f28?default=blank&size=40lab added this to the UM 2 Updates collection ago
6fe419e9d9e8a893bf30f7b9d92b1f68?default=blank&size=40kesjeff added this to the Ultimaker collection ago
8d70ed5f30a5ada44e82e9f742d1478d?default=blank&size=40Peter Murray added this to the Ultimaker2 collection ago
62fdbcd02f872303329102049d1c7ba8?default=blank&size=40Ebigsaints added this to the 3D Printer collection ago
Mini ch30x30mfgeflammtMichael Hafner added this to the Print Head collection ago
B8f587d9730ad5090492bd8d257e1a60?default=blank&size=40dliu added this to the UM2 Upgrades collection ago
Mini aviator2 small png iconChris added this to the UM2 Parts collection ago
31c19c2e5c93928e622cd3cf845851fb?default=blank&size=40Matthew Wilson added this to the Make this collection ago
Mini elfen lied 11 thumb large 1 Da6oN added this to the Ultimaker collection ago
61d99ab80bfb985103db6063ff6a98a7?default=blank&size=40racerbo added this to the UM@2 collection ago
Mini screen shot 2013 07 15 at 6.49.36 pmErik de Bruijn added this to the Ultimaker 2 upgrades! collection ago
Mini profileChristopher Bray added this to the Ultimaker2 Upgrades collection ago
Mini profilbildAlexander Leisentritt published this design ago