While I have no idea what they’re making, welding with friction looks awesomely cool.
I got two different descriptions of how the weld forms from YouTube, perhaps Geek Is Awesome readers can enlighten me as to which is correct?
With the left side still spinning so fast and the right side not moving at all they wouldn’t actually fuse till the one of the left stopped and it started to cool. So actually it would have to be braked to stop that fast since the “weld” would still be in a soft state
There isn’t a brake. It’s pretty cool, but since the one side is held stationary and the other side is being rotated and welded to it, the weld is actually what stops it so suddenly, as soon as rotation and therefore friction stop, the metal starts cooling instantly, since it is now one piece and the right side is held stationary (so now, the whole weld is cool and the entire piece stationary) instantly stopping the rotating side
Brake or no brake?