it's funny that i've messed with shaping on aluminum using doming punches beating sheet on an OSHA mat, but it was hard on the hands. i couldn't believe i couldn't find a tool for holding the doming punches, and the hammer was a carpenter's.
all the stuff i'm reading about here sounds like a much better approach. and thanks for the sites; i've got a good range to piece together my shop now. but i've got some hammers and lots of junk leather i can tie around em til my orders arrive