DO NOT BUY A COUNTERTOP ELECTRIC KNIFE SHARPENER. those things will grind down the edge of your knife to a jagged mess. Find a professional who can do it correctly, and can sharpen to the correct angle. Some of my knives have a 22 degree edge, and some have a 17 degree edge. An electric sharpener would grind both to the same angle, requiring a lot of metal to be ground away in order to regrind the edge.