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How to identify hardened steel
Uploader: Ultimate Handyman
Original upload date: Sat, 28 Aug 2010 00:00:00 GMT
Archive date: Sat, 11 Dec 2021 17:52:03 GMT
How to identify hardened steel by http://www.ultimatehandyman.co.uk/
You can easily tell if steel is hardened or not by testing it with a file.