Human-powered wet grinding wheel

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Human-powered wet grinding wheel

Postby ToneWood » Sun Feb 09, 2014 12:45 pm

Nice video featuring a human-powered wet grinding wheel: http://www.youtube.com/watch?v=4F3HJfy9As8
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Re: Human-powered wet grinding wheel

Postby SeanHellman » Sun Feb 09, 2014 9:37 pm

He says that if you run your finger nail along the edge that it sticks and will not slide. I use this test to find nicks in my tools, my finger nail slides perfectly along a very sharp edge. I would recommend a credit/debit card to do this rather than a nail.
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