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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Description

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.

Documents

  • Span1
    Motor Handle
    STL  –  2 mb
    Updated on 01-04-2016  –  1:07 h  –  7 g  –  91×34×12 mm
  • Placeholder
    Motor Handle
    RSDOC  –  550 kb

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Comments

02c0e4a45277fae90fd149455014b3d2?default=blank&size=40Saqhara added this to the Printrbot Mods collection ago
Mini gold hands croppedMark Rehorst published this design ago