Um, no. The carbon doesn't really burn out of it. You can mess with the temper certainly. But it's not really about using a motor alone. If you have good technique, a motorized tool will work fine. Keep the knife moving so it can't build up enough heat to mess with the temper, it works fine. A skilled worker at a slack belt on a belt grinder can produce an amazing edge. A buffing wheel with some Black Magic Compound will make it scary sharp.
1/31/16 at 10:09am