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The process is called stress polishing. Here's an article about it: http://bobmay.astronomy.net/vacpan/vacpan.htm http://bobmay.astronomy.net/vacpan/vacpan.htm
by vibrolax 10y ago
The process is called stress polishing.
Here's an article about it:
http://bobmay.astronomy.net/vacpan/vacpan.htm http://bobmay.astronomy.net/vacpan/vacpan.htm