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World’s sharpest obsidian knife
We created the world's sharpest obsidian knife, which outperforms a scalpel, using a 60,000 PSI waterjet to craft an ...
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I created the world's sharpest rock knife!
In this video, we demonstrate the process of making the world's sharpest knives using a mystery stone and granite. Leading journalist allegedly threatened Elon Musk speaks out on net worth as he ...
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