Thanks for all the comments and help errbody. I was pretty interested in the tumbler, but I've wanted to do this by hand, so I start sanding/buffing everywhere except on the etching face (save the tumbler for the next project). Turning out really good I think. I'll probably try to work around the etch, maybe some very fine buffing over it. I'll be taking pictures and post them if I'm not too ashamed of what I've done