Quality assessment of cutting blades has its challenges, but these can be overcome. Technique and attention to details with specimen preparation is a key factor to success. Having the specimen flat with no edge rounding will allow an indent to be placed near the blade tip. The use of semi or fully automatic grinder/polishers will provide uniform, reproducible specimens. The use of automatic hardness testers with integrated software systems and high quality optics is the other key factor. They reduce operator error and variance between different operators. Auto-measurement of indents is quick and accurate; indent placement is precise and repeatable, and the total hardness test time is significantly reduced.
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