Ball Milling
WEBJan 25, 2014 · I just finished making a direct drive ball mill on the cheap. I'm milling my first batch of material. I have stainless steel ball bearings (1/4 ",1/2", and 3/4" dia.) in the drum. ... I run ceramic balls in the mill. Granite dust to 80 mesh to fines in 6 hours. ... I think the first thing to do is to throw (or buy) a porcelain jar. If you make ...