2 ms·
Cryogenic hardening is a established procedure: https://en.wikipedia.org/wiki/Cryogenic_hardening https://en.wikipedia.org/wiki/Cryogenic_hardening
by coryrc 6y ago
Cryogenic hardening is a established procedure: https://en.wikipedia.org/wiki/Cryogenic_hardening https://en.wikipedia.org/wiki/Cryogenic_hardening