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. No dressing is required and they leave a nice fine and even sharp edge.
Two sizes are available, both 180grit: 150mm x 25mm x 12.7mm bore or 150 x 40mm x 15mm bore (Creusen)
11 June 2015
Super quality wheelI don't know anything of it's durability, since i also just bought and used it. But according to the manufacturer it should last for many years.
17 May 2015
CBN OKsuper tool. but it would be nice to be able to buy a finer grit as it is difficult to get a polished bevel with a 180 grit
2 May 2015
WowJust bought a cbn grinding wheel. It's a game changer, little or no pressure applied, impressive removal rate, and no blueing - hugely better than my white wheel. I ground all my chisels until the edges wired over, at which point my white wheel would have blued my tools unless I was extremely cautious , the cbn wheel barely heated the tools. It will interesting to see whether the cutting sharpness is maintained over time and the cool cutting performance is maintained. I was beginning to consider getting a wet grinder but not now. The cut is relatively coarse, but as I always finish the final bevel by hand on a bench stone this is not an issue for me. The other issue is the wheel is for machines with 15mm shafts, my grinders have 1/2 inch and 16 mm shafts respectively, so I needed to improvise some bushes . I wonder if 15 mm shafts are common or is it just Creusen. Still sorting out bushing was well worth it, can't enthuse enough.