Actually I recommend a tester. You can find the hand hed variety on ebay just make sure you get the diamond penetrator, which works well. I used one for years then traded up to the bench top Wilson brand. If you keep your eyes open on theused market, Ours is KIJIJI yours may be Craigslist you can find them occassionally fairly reasonable. It certainly helps withthe peace of mind when I know what the hardness of my steel is.
Steve
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