Well in seeing how tough the previous 3D printed gears were, I broke them :) so they were not that tough! LOL

So here's version 2.5 of the gears - I made everything beefier and also put two stages of planetary gears in there for more torque, less backlash, and just all around coolness :)

Here's a video of them working

and here's a few pictures for ya!

Jamie