I have not (yet:p ) gotten into doing rubber stamping as I've been so focused on jewelry making. But I'm trying to work with FIMO polymer clay and you can rubber stamp into that. What I am wanting is a rubber stamp with a "diamond plate" design. (Diamond plate is very heavy steel with a criss-crossed diamond pattern stamped into it. Often used to make truck tool boxes or heavy duty truck accessories)

Can anyone help me? Any ideas?