I need to polish a small mold for a silicone rubber part, my efforts so far with a little buff wheel and dremel have been pretty poor, as the buff marks are showing up in the rubber after molding as a sheen, and dullness. I'm using a fine aluminum polish, some green stuff I picked up at Lowes.

The mold is 6061, the cavity is full of little nooks and crannies like an english muffin.

If anyone knows how to tackle this I'd love to hear it.