Reply by Richard Lee

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Posted on Diamond sharpening wheel

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Richard Lee

312 posts in 1663 days

#1 posted 09-02-2017 01:23 AM

Don t buy diamond … go with CBN (Cubic Boron Nitride). CBN has higher thermal resistance than diamond, and is harder than diamond.

Here s where I got my CBN wheels … there are many other sources:

- TheDane

CBN has the same crystal structure as diamond, except boron-nitrogen bonds replace the carbon-carbon bonds in diamond. ... However, while CBN is substantially harder than other conventional abrasives, it has only 64 percent the hardness of diamond—45,000 N/mm2 Knoop, as compared to diamond’s 70,000 N/mm2 Knoop.

CBN is not harder than Diamond, I second the CBN use for sharpening.

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