4 mm to 5 mm motor shaft / axle adapter

4 mm to 5 mm motor shaft / axle adapter

thingiverse

I build robots and most of the dc motors have 4mm shafts, but most of common available 3D print pullys and gears are 5mm so I searched for an adapter to connect a 4mm shaft to a 5mm axle. I could not find anything so I finaly decided to design my own.

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