onkelgeorg 36
look for "H3 Extruder", which is actually a feeder, on thingiverse (I don't know if it is on youmagine too). This one works really perfect.
For the fan shroud there are many alternatives, but the original is really ok. There is a printable version on youmagine, which is more rigid.
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neotko 1,417
To use that feeder on umo+ you need a different stepper motor with 400steps and 0.8 angle. The same that um2 uses. For fans depends if you want to keep the aluminium or change it all. There are plenty options on youmagine
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