Bristle Wheels in jewelry classes

I’m going to try the 3 inch bristle wheels (big discs?) for my
jewelry class. Any thoughts? My classes are usually pretty
thoughtful, and (for the lack of a better term) mind pretty well for
~20 to ~50 year olds. I’m hoping to cut back on the Zam and rouge

Frank A. Finley
Salish Silver
Handmade Indian Jewelry