What is CBN?—Cubic boron nitride (CBN) is a synthetic chemical compound made up of boron and nitrogen atoms in a one-to-one ratio. It exists as a cubic crystal lattice, with its atoms arranged in a symmetrical, cube-shaped structure like the crystalline structure of diamond. Its material properties include extreme hardness, stability under heat, and superior chemical resistance. Cubic boron nitride is the second-hardest known material on the planet (after diamonds), making it useful in a wide variety of industrial applications where it's often used as an abrasive or cutting tool.
The heat resistance of CBN is quite high. Diamonds begins to decompose to carbon dioxide at around 1,472°F (about 800°C), whereas cubic boron nitride is stable up to about 2,552°F (about 1,400°C). In industrial grinding applications and other processes where intense heat is generated, CBN is preferred over diamond. (wisegeek.com)
The CBN wheel arrived today so I had to try it out. UNBELIEVABLE! I could not believe how sharp my tools got. I have used 2 other CBN wheels in the past, (don't think they were yours) which were not as good as this one. Thank you for your prompt service and quality product. I will certainly pass the word on to others in our guild, (Grand River Wood Turning Guild of Grand Rapids, MI). Keep up the good work!
"Wanted to let you know I received the CBN wheels Friday. I REALLY like the wheels. Great quality. Sharpens my tools like a dream, but doesn't take a great deal of steel doing so. I'll post a review for you and your customers, and I'll spread the good word among the Rocky Mountain Woodturners in northern Colorado. Strong work on your product. What other companies are asking for their CBN wheels is quite unacceptable and you've done us a great favor in quality and reasonable price. Expect to hear from me soon."