Alan interviews Mark Turnbaugh.

In his youth, Mark Turnbaugh loved tinkering. But he found that knife sharpening with his dad's stone was confounding.

Later, as an engineer, he invented a better knife sharpener - Sharpworx, that even novices could use. Today Mark makes and sells his Sharpworx sharpeners all over the U.S.

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Website: www.SharpWorx.com