Modern Marvels
S13 E36
World's Sharpest
What's the world's sharpest blade? Discover all the possibilities, from the Katana blade of the Samurai to industrial wood chippers to disposable razors found in any corner store.
Modern Marvels
S13 E36
What's the world's sharpest blade? Discover all the possibilities, from the Katana blade of the Samurai to industrial wood chippers to disposable razors found in any corner store.