Why Jeff Bezos calls this welding technique absolute magic.

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[00:00:00]Do you remember our the friction stir welding that I showed you?

[00:00:03]>> This This is a [clears throat] a remarkable technology. It was invented decades ago, but has become very practical over the just the last couple of decades.

[00:00:11]And instead of using heat to weld two pieces of metal together, it literally stirs the two pieces.

[00:00:19]There's a 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 at a very precise speed, um and instead of heating the material, it heats it a little bit because of friction, but not very much. You can literally, immediately after welding with stir friction welding, you can touch the material and it's just barely warm.

[00:00:44]Um it's it literally stirs the molecules together. It's quite extraordinary.

[00:00:48]>> Relatively low temperature, and I guess high temperature is what makes them the the That's the weak That makes it a weak point.

[00:00:54]>> Exactly. So, in with traditional with traditional welding techniques, you may have whatever the underlying strength characteristics of the material are, you end up with weak regions where you weld.

[00:01:06]Mhm. And with friction stir welding, the welds are just as strong as the bulk material.