Thanks a ton @Reacher10 I was thinking about making an adapter like this to slow down the flywheel, rather than invest in a monster wheel.
Looks like it's the "rex_flywheel.stl" for the 5" cog upgrade?
What belt would we buy to use this adapter on the Rex, w/o changing the smaller cog?
P.S. I'm wanting to try my hand at recovering a bunch leather parts in my old car. A just few places for contrast stitching so I'd get the Rex pass it on, so keeping the investment low on Rex vs. finding a used leather machine for short use.