I think it means that if you drag your nail perpendicular to the blade, with a bit of down pressure, then it will scrape some of the surface of the nail off. Which even relatively blunt edges will do.
@Greenbank started
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I think it means that if you drag your nail perpendicular to the blade, with a bit of down pressure, then it will scrape some of the surface of the nail off. Which even relatively blunt edges will do.