sod the dremal. get some wet n dry in various compounds. start with something like 80. that'll take off most of the crap that's on there. then work up. you'll start to see it getting more and more mirror like. It's probably best to get them laquered afterwards to protect the finish, but that's a guess. I'm no expert on polishing.
it's a long and painfull process, but it's cheap to do yourself and the finished results are worth the effort.