At that size and speed, I don't think you need the gear to be particularly preci... | Hacker News

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		makomk on July 9, 2015 \| parent \| context \| favorite \| on: Fist-sized 11M-to-1 gearbox At that size and speed, I don't think you need the gear to be particularly precisely machined.

tonyarkles on July 9, 2015 [–]

You do if you're going to be meshing a much smaller gear to it. For the two to fit together, the teeth on the larger gear need to be the same size as the teeth on the smaller one.

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