Natural single crystal diamond is the most wear resistant material in diamond. It is finely grounded and finely ground. The radius of the blunt edge of the cutting edge can be as small as 0.008 to 0.005 μm. However, natural single crystal diamond is brittle, its crystal anisotropy, crystal hardness of different crystal faces or the same crystal face in different directions are all different, and must be selected in the appropriate direction when sharpening and using. Because of the harsh conditions of use, natural monocrystalline diamond resources are limited, and the price is very expensive, so PCD, PCD/CC and CVD diamond tools are mostly used in production.
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