Unimat Problem

[Melkal]

Thanks to all. Very good suggestions. I am not wanting to invest more money into this machine, had to buy a bunch of stuff to make it usable.
I may skin the cat another way, by starting with a chunk of alum or brass, and insert some steel rods around the circumference or sandwich a piece of steel that does not need to be worked, between them. Or maybe just a 2” round brass blank, which even sounds better and easier.
I appreciate all the prompt replies from this group.