William Bronson wrote:How about a drill powered ball mill?
Anne Miller wrote:Check out Hammer Mills as they say they make a unit for home production.
Tereza Okava wrote:Here we grow erva mate (ilex) and they are hard to crush. Old mills used huge wooden rollers, I've seen a few. A similar alternative might be a rolling pin on an irregular surface (the old ones I've seen have "fingers" that stick out of the rollers and correspond to similar holes on the floor below.