Hot BP without ball milling? How? Newbie Questions ...
Nov 23, 2015· Hot BP without ball milling? How? Started by OblivionFall, ... The second is a single twelve lb tumbler that will mill 20 Oz BP per run but because of the rotation speed properly charged it takes at least 12 hours. Finally bit the dust and got a MJR? tumbler 40 lb with the proper rotation speed of 60 rpm. It will do 3 lbs BP in 3 or 4 hours.