Mechanical Desk Toy

This is a quick cad file I made of a desk toy. It's by no means perfect but it works and feel free to make modifications. Basically print all the parts (including 2 of Stand) and they should all kinda slot together. Unfortunately I don't have a step by step guide on what goes where but part of the fun can be figuring that out as you go.
Hope you enjoy :D

Some tips: the "bumper" can easily be blue tacked on to find its optimal position, or you can glue it.

Some parts may require a bit of sanding to get them working right, for example on the main arm I would recommend sanding the 6 teeth a bit sharper.