We actually manufacture a diamond profile wheel that fits on a bench grinder, it is diamond electroplated with a internal profile 13mm wide with a full radius & is coarse coated for easy use just move the carbide tooth into the radius & grind it instantly & still keeping the correct shape, I supply them to saw sharpening & stump sharpener in the UK & in Europe, they are safer than green grit wheels & last about 30 times longer if dressed regularly & used correctly, if you want more information message me I'll be glad to help
