mine is one of those metal ones, without a collector in it. there's more friction when i grind up my budy now, so i want to clean all the weed that's preventing it from moving.
I'm guessing you have one of the smaller aluminum ones. Just soak it in Isopropanol for a couple hours and it should come right off. Then, you can wait for the isopropanol to evaporate and scrape up the shit thats left with a razor and smoke the fuck out of it.
^^ dude r u on crystal or acid mabye schrooms...u need help...hes talking about the grinder that...u grind up the weed in to roll one...