MJR builds this one in the USA as a commercial duty machine: steel frame, stainless steel ball bearing rollers and a base that accepts several barrel sizes and combinations, so a 10 pound drum can be swapped for two smaller ones later. The company backs parts and labor for two years, unusual in a niche where a burned motor often means a new tumbler. Kit versions ship with a four stage grit and polish set.
This is the step taken by people selling polished stones or cleaning antique bottles, not by someone testing the hobby for a weekend. Ten pounds of rock plus water is heavy work at every stage change, and the price sits far above Lortone and Thumler's hobby models. Support runs through the small company itself, by phone or email, which is fast when it works and slow when they are busy.
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