I use a Tormek rather than a grinder for getting the basic angle, though I have a slow-speed grinder that I use for other stuff. The Tormek gets fired up 2-3 time a year, to be honest. I use a combination of sandpaper, lapping film, and waterstones for flattening and honing. I like the waterstones, but could do with just sandpaper and lapping film.