Printruder II
Description
This is what I came up with.
Please note, that there are two flavors of the main part ("Motor Block"):
Motorblock_v7_TimerBeltPulley.stl
This design is for use with the standard timer belt pulley, which comes with the MakerBot Extruder MK3/MK4.
Motorblock_v7_WormGearPulley.stl
This design is for use with a 10mm worm-gear style pulley
You only need one of both. Be sure to print the correct one!
The PCB holder parts are optional.
There's a post on my blog on this with more detailed information and step-by-step build instructions:
pleasantsoftware.com/developer/3d/2010/03/08/printruder-ii/
In order to mount the Printruder II in a MakerBot, you might want to print also a pair of Printable Extruder Holders: thingiverse.com/thing:1912
Instructions
- print the Idler Block part
- (Optional) Print the PCB holder parts
- Follow the step-by-step instructions at pleasantsoftware.com/developer/3d/2010/03/08/printruder-ii/ to assemble the whole thing.
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Is there a way this could be adapted to a Nema 17 motor? Would you need to gear the stepper motor, like Wade's geared extruder, to make it strong enough? I think that would make this great design even better.
Great design! My only problem was too many vertices on the screw holes - my Makerbot would use too much plastic, and eventually the printhead would jam. A couple of the skeinforge tricks didn't work. I ended up editing the piece in Sketchup to get rid of the extra edges, using hexagons instead of circles for the through-holes.
Looks wonderful, though I'm having a difficult time finding the actual differences between the timer and worm gear versions.
Very slick, love the open face for quick access.
2ROBOTGUY one way to get the hand drawn look could be.. drawing it before modeling. ;-)
Bo
The motorblock looks very heavy.
How well does it print without warping?
mine started warping on the bottom left corner after layer 15-ish...
it eventualy got stuck outside the model and started banging into the screws from the build platform... reckon i'll be getting me a heated build platform aswell...
It prints without problems on a heated build platform. Can't say how it warps on a normal platform with raft, sorry.
License
More from Zaggo
Hi Zaggo,
Great work! I just assembled my printruder II but the 626 idler bearing doesn't fit into the standard MK4 pulley. I'd say it only works with a worm gear pulley...