I make jewelry and wanted to get into metal stamping. I finally found some ABC stamps. I have looked everywhere and cannot find a metal soft enough to stamp into. I bought a sheet of flashing and some hollow punches. I have punched a few circles, which takes some time, and I seem to not have a problem with stamping into it, but I would like to find some that are either already cut or softer. Any suggestions on what type of metal to use and where to purchase softer metal? Thanks!