Herringbone Gear Desk Fidget

I designed this Thing as a fun little project to occupy some spare time with the design and printing, with the added benefit of being able to put it on a desk and play with it.

This Thing is just a simple 2:1 gear ratio - for every one revolution of the large (driven) gear, the small (driving) gear makes two revolutions. I designed this using herringbone gears due to their ease of meshing and self-alignment. Standard spur gears have a tendency to wander without some method retaining them, and