UM2 Feeder - SP3D Version

Commercial grade feeder

3D printer parts and enhancements

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Modified version of Takei Naodar's feeder, which was a modified version of iRoberti"s feeder.

-Added indicator so you can see what you're tension is set to
-adjusted tension settings, zero tension is now possible up to full spring max tension.
-revised outer casing at rear for 2 screws instead of 3, as well as made it symmetrical.
-adjusted some tolerances
-2 designs, one with stock tension screw and nut, another with socket cap screw and square nut.

Step-by-step instructions included

While not a quick change feeder, this is a workhorse feeder. It is simple and just keeps working, period. It will feed flexible filaments, no problem. It has a huge range of tension adjustments for a wide range of filament diameters and types.

Lots of credit to those guys for a great starting point in a reliable feeder design.
Here are the links to their pages
Takei Naodar -
iRoberti -

Materials and methods

- (2) #6 Flat head sheet metal screws
- (4) 3mm x 30mm machine screws
Reuse stock 3mmx20mm tensioning screw or
- (1) #6x1” socket cap screw and
- (1)#6 square nut


  • Placeholder
    Sp3 D Feeder All Files
    ZIP  –  4.4 mb
    Version 1 - Sep 14, 2014
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    Um2 Feeder Revision
    PDF  –  3.1 mb
    Version 1 - Sep 14, 2014


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C64c1622c82244af69fb42ca56471696?default=blank&size=40Justin Otherguy added this to the Ulti collection ago
Mini 11754397 10206328150656315 4100330236590689548 obortek added this to the UM2 collection ago
Mini 11754397 10206328150656315 4100330236590689548 obortek commented ago

How do you actually change the filament? Do you just push in a new one and it starts rolling in? There is no open-close mechanism like on iRoberts V2 feeder.

F5e2568eceb45ad046d74c83aca83bfc?default=blank&size=40Damien Hanser added this to the FEEDERS collection ago
5a8f31ee508cc99b8d2b376800c2c76e?default=blank&size=40Guilherme Silvestre added this to the PEÇAS IMPRESSORA 3D collection ago
Mini img 20160616 214649728ltmhenrique added this to the peças printer 3D collection ago
A3341003b423e392cfb3aec21567f07f?default=blank&size=40artyru added this to the 3D printer parts collection ago
8f921f3c040c44b3226d53e1da3cf6bf?default=blank&size=40M.Schubert added this to the Ultimaker 2 collection ago
D08993daec78724d920b5b8e8257e00f?default=blank&size=40Doomish added this to the Extruder collection ago
74bf6ba057353908716e34b6865b84d3?default=blank&size=40asbmaker79 added this to the ultimaker2 upgrades collection ago
0b13c32483290cdee981b7cc446e8e94?default=blank&size=40Alex added this to the Printer parts collection ago
21426531408b141780392706e0e322e4?default=blank&size=40MajorKoos added this to the Stuff to print collection ago
21426531408b141780392706e0e322e4?default=blank&size=40MajorKoos added this to the Ultimaker 2 Upgrades collection ago
Aed658d27205686b4763887772ec02fc?default=blank&size=40Nativ Sarussi added this to the UM2 upgrades collection ago
52d1ddd35ed17dad9a60ffa632976c60?default=blank&size=40plastmaska added this to the Make this collection ago
Mini mm logo final flipMarek Moffett printed this ago
Carousel thumb 20160228 132708
Printed on:
Ultimaker 2
Had to drill out the holes for the spring (i printed them on form 2) other than that, tolerances are great!
Mini gotabadassoverhere3deditoraczucker commented ago

I made some modifications to this design to get it working on my Frankenstein UM Original ( Those aside, I have to say this is probably the best feeder that I've bolted on, and I've tried many over the years. Thanks!

C547b810270b9980d0200c7f15c58e0a?default=blank&size=40ThomasBe added this to the PrinterAcc collection ago
Mini screen shot 2013 07 15 at 6.49.36 pmErik de Bruijn added this to the Ultimaker 2 upgrades! collection ago
Cb013efa08026866713ee8ea4f98a733?default=blank&size=40Sergey Fedorov added this to the Ultimaker 2 Upgrade collection ago
Mini elfen lied 11 thumb large 1 Da6oN added this to the Ultimaker collection ago
Mini imageChase added this to the Add ons collection ago
Mini ataraxis glow bigataraxis commented ago

hi @SolidPrint3D ! thank you for sharing - i need to modify it a bit because i want to install it at an UMO with an MK8 drive gear, can you therefore maybe share the STEP files with us? thank you!

Mini laweb logo avatarPatrick Laarhoven printed this ago
Carousel thumb youmagine 3308 sp3d feeder dsc6860
Printed on:
Ultimaker 2
Very professional design. Thanks very much. I didn't like the need for buying new screws so I cut off the bottom 2mm in Cura and made the housing the same thickness as the standaard feeder on the UM2. Set the top/bottom to be the same as the number of layers remaining so that the remaining shell was at least a 100% solid fill.
Couldn't get the ABS to stick while I was printing this so in the end I went with PLA instead. Unfortunately that did stick to the ABS juice like a vise and I had to literally rip it off. the surface looks rather scruffy because of that, but it works just fine. Cutting off 2mm on top and bottom gave some extra openings in the housing. Or rather, it gave a 1 layer fill that broke away. Still, I preferred to use the standard screws.
Mini rounded thumbnail largeSolidPrint3D published this design ago