Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

micro extruder

by edwyn, published

micro extruder by edwyn Jul 30, 2012


having a direct drive for not to much money was my goal in this. i have tested a few motors but i found the 1Nm motor works the best

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Something is off with the two holes on the top which create the pressure on the filament. Please check! Thanks

10mm/sec should be good, 100mm/sec is maybe a little conservative. but be-aware if your using the stepper from trinity it has all brass and lifetime expectation personally is 4 months

Trinity Labs recommend us to make sure gears are well greased to prevent this (not sure this is enough(.

If I understand correctly 10mm/s should the max retraction speed and acceleration should be kept low too (not sure if 100mm/s^2 is too conservative or not).

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micro extruder by edwyn is licensed under the Creative Commons - Attribution license.

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1 x bearing, as used in wade
1 x 8mm short shaft
1 x driver pulley
2 x M3 45mm long bolts
2 x M3 nuts
2 x M3 washers
2 x M4 x 35

1 x wood or aluminum adapter plate for mounting a wades extruder to a prusa x carriage
1 x 1:50, 7 ohms, 12V, 0.4A litte geared stepper
1 x set of printed body, idler
1 x hot end with groove mount mounting system


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flouSH on Mar 9, 2013 said:

Something is off with the two holes on the top which create the pressure on the filament. Please check! Thanks

misan on Dec 10, 2012 said:

I have read this complaint on youtube: http://youtu.be/Ft2PxD-q7aU

Did you experience any trouble?



edwyn on Dec 11, 2012 said:

Hi Misan, I've personally experienced this problem after 4 months of usage

flyingbird on Oct 13, 2012 said:

I am using this extruder for my printer. Can anyone pls tell me what is the hole to hole distance for the bigger part in landing surface?
I would appreciate if someone can share the CAD file for this extruder.

edwyn on Oct 13, 2012 said:

Hi FB,
does this help you? http://2.bp.blogspot.com/-Imy1...

Kind regards,