printing out a 1:85 compound planetary gearbox, and testing it to failure. The results? The composite resin performed admirably, and somewhat to his surprise, the teeth on the little gears showed ...

Realizing that it’s essentially a cycloidal drive meshed with a planetary gear set ... How would this 3D printed contraption hold up? To test this, [Michael] built a test jig with a NEMA ...

Experience the ingenuity of a wind-powered Lego gear machine that showcases a range of unconventional gear types never before made by Lego. Powered by a vertical wind turbine, this machine rotates ...