If your serious about tumbling this Lortone C20 Tumbler with it's high cup capacity heavy duty machine will do the job. Ideal for the following applications: Polishing and grinding of gemstones and glass.
When polishing and grinding gemstones and glass, make reference to the abrasive Silicon Carbide. When burnishing silver castings/ammunition casings make reference to Stainless Steel Shot and Burnishing Compound
Single 20lb Barrel
25 Cup Capacity
30mm x 70mm max rock size.