You've see oikos's table saw for a real dremel (https://www.thingiverse.com/thing:670704), but now theres a version for the cheap-o $10 Harbor Freight one!

I saw oikos's version and thought, man it'd be cool if I had one of those for my crappy dremel thing, so then I decided to design my own instead of going to homecoming. When you put the holder and the bench bottom together it might be a good idea to use super glue.

To put it together, you put the holder and the bench 1 together, then, without a disc, slide the dremel into the holder, it's friction fit so you might want to hot glue it in, then put a disc on like you would normally and put the top on. Fair warning, it does like to vibrate but that was definitely planned for and it's 100% a feature and not something I realized after I put it together

Some sanding required.