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Rotary tumblers

plain ol Bill
in Blacksmithing, General Discussion

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I am building a tumbler using an old 100# propane tank.  I am going to line the inside of it with some old conveyor belting I have stuck out in the woods to help control noise. I will be using punch blanks from an iron worker for media. My question is:

WHAT RPM TO TURN THIS THING??

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    The large tumblers I have used turn between 20-30 RPM. The smaller rock tumblers turn 8-12 RPM.

    I can't control the wind, all I can do is adjust my sail’s.~ Semper Paratus

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