Simple Rotary Tool Lathe by GMAY3 Design

I designed a really simple, easy to print rotary tool lathe "bit" you can use to shape soft materials like foam for model making. It helps me create symmetrical prototypes super fast!

Here's a video of it's prototype version in action
https://youtu.be/GwL1U3ZleRU

All you need is a larger rotary tool adapter, which is basically a large, heavy duty version of the common cutoff wheel bit.

This is the exact one I used below:
Gyros 80-18105 Mandrel, 1/8" Shank - Stainless Steel, Fits 1/4