Saturday, December 3, 2022

3M and the history of sandpaper

 I had no idea that there were so many innovations in abrasives, nor how recently many advances were made. 13:54 Getting modern synthetic hard abrasives to be sharply angulated at the microscopic level, and placing them on a weave to allow extracting dust through the abrasive surface, have made newer materials more competitive. 

https://youtu.be/kTiIFzhxhq4

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