My daughter is looking to buy a shaking/vibrating (as opposed to a rolling) rock tumbler. Although this would be an unusual prepping technique for fossils, I'm guessing people may have tried it for corals , or non-fossils. When I read online reviews, it seems everything that is advertised as a vibrating (or shaking) rock tumbler is really designed to clean up small metal bits and are not really durable enough to handle rocks. Some are plastic and fall apart in just a few uses. Has anyone had experience with a device they are happy with?
Don