Ok here's the deal. I normally just toss in a cap or two of New Finish or Flitz in the tumblers when my media gets changed out. I use the crushed walnut for the rough stuff and then the corn cob for final or the cleaner stuff. I know the SS pins are all the rage now but I bought the media in 50# sacks years ago and I have more than plenty to use up. This past weekend we did a major garage clean out and I found an almost full tub of rubbing compound which has dried out, due to being out there who knows how long. The first thought was toss it but then I thought about the possibility of using it in the walnut to aid in removing the really cruddy stuff. Any thoughts on if it will mess with the cases or not? I seriously doubt that it has/had any ammonia in it, and if so it has long evaporated I would suspect. What ya think, use it or toss it?