"Military Knives, Surfboards, Mattresses and Guacachips"
Date Aired:
Mar 10, 2010
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Find out how they make knife blades that are so sharp and strong that they need to be regulated by law, what's the trick to getting a good night's sleep on mattress springs, how do they shape a surfboard for the ride of your life, and how do they make a chip that needs no dip?