After using the molding sander for my Shopsmith a few times, I realized it needed a little tweaking. Part I here and Part II are here with my first attempt. On occasion the sand paper would stop spinning, so I decided to switch to a threaded rod so I could tighten it down even more.
It also needed a new way to attach to the Shopsmith. While I was shopping for parts this spring I bought a Morse taper drill chuck that fits into the tailstock. Into this I inserrted a bushing the right size for the threaded rod. It’s not a perfect solution, idealy both ends should spin, but with a little grease, it gets the job done!
Now the sanding mop doesn’t stall when it’s moving too fast! I’ll call that a win!