Miniature Mouse-Style Sander For Hobby DC Motor

https://youtu.be/2hbrSeXZmpU

This is a sander made for a 30mm diameter, 2.3mm shaft Hobby DC motor as commonly found in old inkjet printers (this one was from an HP I think).

Probably totally useless, I just got an idea and had to make it, it seems to work, for how many minutes I don't know :-)). Maybe useful for sanding 3d prints, or blank PCB material ready for toner or UV film lamination.

There are just a few parts, the bottom foot (Part 1), the upper motor shoe (Part 2), two top pl