Are rock tumblers worth it?
I picked up a rock tumbler at Wal-Mart for $23. We have some appropriate rocks we'd like to tumble BUT, do these things work as well as they claim? So many products show images on the packaging that are nothing like what the product actually produces. Also, I bought a refill kit, but how easy is it to get the grit and polishing compound once we run out, and where? Thanks. . . Kathy
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