Lex Fridman Podcast
#405 – Jeff Bezos: Amazon and Blue Origin
Jeff Bezos
It was invented decades ago, but has become very practical over just the last couple of decades. And instead of using heat to weld two pieces of metal together, it literally stirs the two pieces. There's a pin that rotates at a certain rate, and you put that pin between the two plates of metal that you want to weld together, and then you move it at a very precise speed.
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