Probably a silly question or two, but here goes.

I textured some silver sheet in my rolling mill using a brass texture plate but after using it a dozen times or so, the texture plate has gradually curled, still useable but getting more-so each time I use it.

Presumably I am doing something wrong, just not too sure what. I used just a single piece of silver with the plate. Should I have sandwiched it between another piece of metal, and if so, is the silver the sandwich filling or the texture plate?

Now for the really silly question(s) - can I just anneal the brass plate and try to press it flatter? But if I do that, when I use it next time will the annealing process mean that the texture flattens?

Thanks, Susie