So, it looks like a small cut off wheel at an angle will do it right? Does anyone know why the groves are at an angle as apposed to parallel with the shaft?

67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....