whats up guys? i found a toilet tank and hit it with a rock, so now i have a few slabs of "john stone" to play with. i have been able to create some point shaped things from glass, but this stuff confuses me. i think your supposed to knock off big flakes, then pressure flake those right? i cant figure out how to get off big flakes. i can only get em about the size of my thumb nail. help please.