You might look at this sit. You can even download refinishing videos. I have used them on guns and other things, but not mic shells. good company and lots of stuff. http://www.brownells.com/aspx/ns/store/catsearch.aspx?c=751&p=4798 -- Chuck Lakaytis Director of Engineering Alaska Public Broadcasting, Inc. 135 Cordova Street Anchorage, Ak 99501