Using a Magnetic Tumbler 

Denise Regan The magnetic tumbler is perfect for use on copper and silver. Almost every customer who has purchased one uses theirs on copper and silver. We use one here for finishing when we teach classes.

Brew Master We'll put finishing stainless on the list of ideas. You can use the magnetic tumbler to finish stainless steel,, but with conditions. You can ONLY use the stainless pins as media. The spinning magnets in the machine are what drive the media, unless you go an purchase elaborate contraption that fit into the bowl for other types of media. We don't recommend since buying a regular tumbler would be cheaper. Second if your pieces are a low grade stainless, they might be attracted to the magnets and would spin with the media and not get finished.