ORIGINAL: trailer
ORIGINAL: bigcountry
I have never dinged up brass in a tumbler.
With or without media. It will make a difference and also the type of tumbler. We have a tumbler at work for removing sharp edges and on some metal parts and the brass has the same type of markings as the finished product from our tumbler...
You got me there trailer, Never heard of anyone tumbling anything in your typical home run of the mill brass tumbler wiithout media. In fact, I haven't seen a tumbler meant for polishing, without media. But thats me.