120 Grit CBN knife grinding wheel. Perfect for your steel knives.
Diamond grinding wheels have always been thought to have superior performance over any grinding wheel in the industry. Diamond grinding wheels are great for carbide, glass and ceramics, but they don’t handle heat well when it comes to sharpening the hardened steels that are used in tools. CBN grinding wheels have taken over the industry. CBN is a man-made material that rivals the hardness and durability of diamond. CBN is named for its cubic form of boron nitride (cBN). The CBN crystals are joined together from equal parts of boron and nitrogen. We all know that working with difficult to grind (DTG) materials causes a rapid breakdown on most wheels due to the heat that is generated. CBN grinding wheels are the solution to such a problem. The cBN compounds can withstand temperatures of 1800 degrees Celsius.
CBN grinding wheels can grind hard metals, cast irons and nickel-base Superalloys far faster and more precise than other abrasive. While diamond wheels may have a difficult time grinding steel at high temperatures, CBN grinding wheels are the preferred method when grinding DTG materials.
Another advantage of using CBN grinding wheels over conventional abrasive wheels is that there isn’t a risk of wheels chipping or cracking from tool dig ins. Conventional grinding wheels can easily be damaged for example when tightening a flange nut too much, causing the wheel to break. With a CBN grinding wheel, you don’t have to worry about over tightening as the wheels centers are made for Aluminum, Steel, Copper or other very durable materials.