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+1. I thought the same thing. I might just message the seller and tell him so. I could imagine getting hypnotized watching that thing , if I had it, like it was an electric train set going around....

Could it really work ? Stick a razor in there and go buff some scales while the contraption hones it up. :) I don't know if the claim of the stone being an Escher is accurate and it isn't an issue...