guys,thanks for all the tips.I think i am going to get a couple of old barrell and try some different things.also i have another question.the water in the boiling tank.should it be changed every time or it ok to use it dirty.what i mean is after it builds up film and yuk.Is it ok to just keep adding water to it or should it be changed.

also,what would be a good rpm to step up to to get a better carding after the first coats a lower rpm,s .