4 Comments
  1. Slug ABug says

    They make polishing media for that. The rocks are probably going to gouge the inside of your tank.

  2. Mark Turney says

    This process is called "TUMBLING" not rumbling.

  3. VietVet 1970 says

    If you're interested in a potential mod, try a washing machine transmission coupler between the tank and the motor shaft. If the shaft and the coupling have less than perfect alignment, won't they have a tendency to become brittle due to flexing and metal fatigue? I really like your design.

  4. VietVet 1970 says

    I love your engineering! I'm kicking myself for tossing out a functional garage door opening motor. I recently came across a perfectly sized motor but it's a 220 VAC single phase input.

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