ball mill rock tumbler. difference between a ball mill and rock tumbler, ball mill, tumbler for grinding and, crusher in india. rock tumbler/ball mill? updated fri 12 jan 07 : john connolly on wed 10 jan 07 donna, i don't know about thevibratory tumbler as a ball mill for black powder, clayart, thread 'rock tumbler/ball mill?' donna, i don't know about the use for a ball mill, but back in the ...