Always go steel if you can. You’re going to be doing a great deal of hand engraving and etching and copper is notorious for being difficult both to finish sharp and keep scratch free unless you have years of experience. I did some of my work on copper but had the plate making guys give it a...
If anyone needs my thoughts on any hand engraving issues then I’m happy to chat. Can’t promise to respond immediately but will drop in now and again. I engraved for the Bank of England back in the day.