I have added a new tool to my collection, and I'm very pleased with it so I thought I'd share. It's a wood doming block, that doesn't spoil the texture on metal, or scratch it. I have tried it with textured metal clay and with annealed copper and silver, and the results are good.
Also - it's very cheap! £4.35 (plus VAT) from Bellore, but you can also get them on Ebay.