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From what I've been told is to watch hardness testers that are being offered on places like Ebay. Both portable and bench mounted. Some of them are being sold because the factory will no longer support them so they will only be good as long as their reading match your test blocks because no one will repair them. Be careful if the add says no returns because that could mean that the unit is only worth parting out. A third thing is to make sue that the hardness tester will measure at thickness as thin as most ricassos get. I was researching some electronic hardness testers that would give Rockwell equivalents and noted that some of them had a minimum thickness of around 1/2" or so. Not much use in knife making.
Doug
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If you're not making mistakes then you're not trying hard enough
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