Making A Knife Using Ancient Greek Technology
10:53
World's Lightest Hammer To Keep You Swinging All Day
12:16
100,000 RPM Carbon Fiber Wheel
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World's Sharpest Amethyst Knife
16:14
Can You Forge Tungsten?
15:47
World's Sharpest Superconductor Knife
14:06
Can Glass Cut Wood?
14:11
Making A Knife From Copper and Damascus
11:00