MJR Tumblers | Rock Tumbling Hobby
Well, as some of you know, my Ball Mill Tumbler ( MJR Tumblers) had a bearing freeze up and grind the shaft through after about 100 days of use. I'm happy to say that in addition to lots of advice, the owner Matt Romney stands behind his product and honored the warranty. Sent me a whole new drive shaft with new bearings and a new pulley wheel.