DC Motor Clip and Collar
thingiverse
Recognizing that it will take a while longer to get the full working printable gearbox, I'm releasing parts of it in incremental updates. The DC motor clip should be pretty handy-- the motor it's for is common and cheap, so this geometry should make a decent starting place for simple (non-geared) robot applications and other things. Instructions Hack open, take the geometry for your own, and make printable objects that accept cheap DC motors!
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