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NEMA-23 Motor Finger Crank
This finger crank fits on a flatted 1/4" shaft to allow rapid manual positioning of anything driven by the motor.3D printer parts and enhancements
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I recently changed from belt drive to screw drive in the Y-axis of my printer. That required a larger motor, so I bought a dual shaft motor that has the shaft that sticks out the back side as well as the front. This crank allows me to turn the shaft/screw manually to reposition the print bed to do things like level the bed, work on the undercarriage, etc.
It fits tightly (I have to pry it off with a screw driver) and lets me spin the motor with my finger very easily.
I originally printed it at 50% infill and the part that grabs the motor shaft didn't last. This version was printed solid and it is holding up well. I used 0.2 mm layers, Coex3D green ABS, no support material needed.
Materials and methods
Only your favorite ABS filament, an not much of it.
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