Precious metal engraving?

Thanks. I get that but wasn’t specific enough in my language. Later in the thread I saw that some artists were talking about creating resistants for etching and other techniques.

After combing the threads we have been experimenting with lasering away blue masking tape over copper. Next will be to apply liver of sulfur.

If we get that down we want to try the tape on silver followed by painting on Midas Black Magic. Hoping the tape will hold up. Has anyone attempted this?