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I am so glad I bought my Rockwell hardness testers, and yes I said testers. I was able to get two from a closing heat treating shop for under $400 TOTAL.
I tend to be a perfectionist spending too much time obsessing on the smallest details. That being said, Not knowing if i have been getting the most from my blades bothered me more than I can possibly express.
All of my testing have proven my processes were sound, but the fact that I now have physical evidence of that has made a huge difference in my confidence level as a maker.
They are not absolutely necessary as there are other tests to verify hardness, but they are so very nice to have.
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