Rubber Steel Sheet - Self Adhesive (Green Stuff World)Rubber Steel sheet SELF ADHESIVE in A4 size. Rubber Steel sheets are impregnated with iron to allow magnets to stick to them while remaining flexible and hardwearing. Simply cut the self adhesive sheet to size and affix it to your painted movement tray to allow miniatures with magnetic bases to stick to it. They come in handy for many craft applications, especially in wargaming where they can be used to make your own magnetic movement trays and