I was just reading in Leonard Lee's book _The Complete Guide to
Sharpening_ about this. His power sharpening tool of choice for the
primary bevel is a vertical belt sander because it is cooler and
creates a flat bevel. Then he puts a microbevel that is one degree
greater than the primary bevel on using either the Eclipse or Veritas
honing guide and waterstones(800x followed by 4000x to 8000x).

Lee does not like hollow grinding at all.