Get some "agressive" tape, so your CSPB doesn't "slide" when your hands get sweaty etc.
I would stay away from brushes on grinders because most people don't realize that the brush can "impregnate" softer stainless w/ whatever you brushed last.
If you knock the rust off a cross-peened 3 lb. forging hammer, and then hit that softer metal w/ it, your stainless will start RUSTING...overnight.