I always think that all aluminum radiators with all fins are extruded or cast. Although these two are common production methods, I just stumbled upon this crazy-looking alternative:

I really want to know whether the microcracks at the bottom of each fin will slightly reduce the thermal conductivity of the heat sink. Nonetheless, a very cool zero waste method.

This is how they make the radiator speak... "We have a way to make you speak," the operator said...

Wow, cool, I am not familiar with his process. Thanks for sharing.

I met a radiator supplier and they scraped during the demonstration. Now I know what it is! Thank you C77!

I am a failed industrial designer. I was born in New York and thought I would die there, but I gave up New York a few years ago and lived with my wife on a farm in the country. We have six dogs.

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