From the Loftsmith community

Print-in-place planetary gear set

A little gearbox you can watch work, straight off the print bed. A sun gear sits in the middle, three planet gears ride around it, and an outer ring holds them all. The centre hole is sized for a 608 bearing. Change the ring width or gear height to suit your project.

5 parts · 20 g · 80 × 80 × 10 mm