Redhawk,
I made these from some instructions that I found on the net. It's not hard, just very time consuming. They polish up like glass with wet/dry 600 grit paper, then Flitz or any kind of metal polish. You can use Play-Doh or Silly Putty to seal them enough to tune them for the tone you want, then mark for gluing. They will come out very nice, and sound good too.