Diamond-coated sharpening devices remain permanently plane, and are especially suitable for tools with straight blades as well as for producing plane surfaces (e.g. backs of plane and chisel blades, plane soles, scrapers). Also suitable for carbide coated cutters, tool steels, HSS as well as non-metal materials (glass, ceramic etc.). We recommend moistening diamond-coated sharpening devices with water and grinding with little pressure.
* Monocrystalline diamonds are significantly more wear resistant than the polycrystalline diamonds used to make lesser quality diamond sharpening tools.