This Crazy 3D-Printed Gear Only Turns Clockwise No Matter Which Way You Crank It

This Crazy 3D-Printed Gear Only Turns Clockwise No Matter Which Way You Crank It
YouTuber Maker's Muse discovered this gear setup in a book from 1908, reverse-engineered it and built it. It's pretty darn cool.

May 30, 2018 at 11:39AM
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