No fuzz 1.75mm Nema 17 extruder
by Kulitorum, published
Most basic but very well working extruder. One piece with a Mk7 drive gear and a idler bearing.
it's solid, it's simple and it just works.
Print the part, mount a 624 idler bearing (4x13x5) with a M4 screw.
Mount the motor with the Mk7 drive gear and adjust the position of the motor to adjust the tension on the filament. You want it to make clearly visible indentations in the filament.
Mount on standard 50mm carriage.
Never look back.
The part is modeled in SpaceClaim, but I have added all the CAD formats I could export, so everybody should be able to modify it.