Guiroshaklave and Crank
16 oz Propane tank, containing 1/8 inch bearing balls, welded to 3/4 black pipe, welded to serrated 1 inch black pipe. Shaken, or scraped and/or struck with 1/2 inch rod.
The ratchet is a 1 inch bandsaw tine and a 1/2 inch one spring mounted to allow contact with a squirrelcage from a Ford F-100 double blower the other end of which has been replaced by a crank handle.
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