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So, as you have found, hair test are unreliable… mostly because the sample size is so small, one micron of a 3in edge.

Look at the edge with magnification, before you do anything, then, do what is...

The 12k Super Stone, is a great stone and capable of much more than most give it credit for. Make sure to lap it and to refresh, with some 320 wet & dry or a diamond plate. Good diamond plates are...