united states cbn micron powder m4 8 4 8

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  • Varun Udyog - 4.imimg.com

    CBN is made for hardened steel, so for all of the HSS, M4, and V 10 and V15 powder metals, they are perfect. There are some who claim that you need the CBN wheels to get the best edges on the V 10, V 15, and M42 cobalt HSS steels. Doug Thompson does all of his sharpening of his tools on the more standard wheels.

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