I have found that breaking the law is total misery, so I ty not to break the law. But I have seen, I belive bubbleman, heating and rolling hash with a rolling pin. There is also a store that sells, steel stamps. Letters and numbers, so you can heat, press, freeze, unwrap and unfreeze, then imprint the hash. I would print, date, strain or strains hashed, screen information, and what part of the plant (ie, buds, fans, bud trim or combo).