End Mill Sharpening on Surface Grinder
4) Cup grinding wheel. just seems easier to use a cup wheel. i usually only grind 0.0005 to 0.002" per pass. There are primary and secondary angles on periphery and end cutting edges. So 4 adjustments and grinds to sharpen a badly dulled end mill. Frankly I just save a lot of old end mills as it is much faster to sharpen many of the same size.