making your own porcelain ball mill jars Studio ...
Jul 19, 2013· 1. You don''t need a round jar. Make a jar and mount it in a round metal sleeve that has been turned true and cylindrical or make your ball mill so that it has a cradle to hold the jar. 2. see #1. It makes #2 a non issue. Usually you want to make ball mill jars thicker than normal wares to make up for the wear of the grinding media inside.