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Lego-compatible hand crank
hand crank handle fits LEGO(r) Technic shaftToys
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Crank arm which fits onto LEGO (R) Technic cross-shaped axles. When assembled correctly, the round handle part spins freely on the M3 screw which is fastened to the crank arm. SCAD file provided so you can make a different crank arm length, handle etc.
It took me 8 iterations to get the "+" shaped socket to be a snug friction-fit on the axle without being too stiff. The file has been tuned for my printer (UM2, PLA at 20 mm/s, 223 C) and may need adjustment for a perfect fit with any other printer.
Materials and methods
- 1 M3 screw, 25mm
- 2 M3 washers
- 2 M3 nuts
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