Tru-Grind Cubic Boron Nitride(CBN) grinding wheels are a revelation for the sharpening of HSS turning tools. CBN abrasive is a similar product to synthetic industrial diamonds, but a CBN wheel is far better suited for sharpening high speed steels and will withstand the friction from grinding with much less heat produced than with a diamond wheel. They produce hardly any sparks, cut quickly and efficiently and will last for many years. Plus, because it will withstand the friction the wheel doesn't wear and therefore the jig will not need to be reset. No dressing is required and they leave a nice fine and even sharp edge.

Two sizes are available, both 180 grit: 150mm x 25mm x 12.7mm bore or 150mm x 40mm x 15mm bore (Creusen)

Due to the weight of the wheel, these should be used on grinders with motors of 375W or above.