20 ga copper scrap
stamping tools bought on etsy at http://www.etsy.com/shop/themysticalportal?section_id=10902780
and another supplier I use http://www.etsy.com/shop/theurbanbeader
these are excellent suppliers highly recommend them!
Liver of sulphur in the bottle
hot water (warmed in the microwave then added LOS)
Brass hammer, I also use this one for punching out disks and dapping.
Here goes , cut the copper I just used a scrap I had since I am experimenting with this technique. I just randomly stamped the design now I know you can plan it all out and get it just so so and perfect but that"s not me. Sorry. I wondered about annealing the metal but thought that may have made the metal to soft to stamp on. Please always remember the hand should be at the end of the hammer when holding it to get the power from the blow to your object. I only hit once. I loved it.
In the photos you can see the process I took ,
I see design ideas with this technique , If you have any questions please just ask and I will help if I can.