Clark, thanks for the tip and link. I'm gonna get some of those for my daughter, wife, DIL. They look easy to use and foolproof in the short run.
For myself, that kind of sharpener seems to change the shape of the blade, and over time, changes it quite a bit. IME if you start with a pretty good blade edge geometry, a dual wheel sharpener works well for several sharpenings, until it shaves off enough edge material to make the blade thicker and thicker, closer and closer to the cutting edge. Maybe this item works differently than others of its ilk and I admit that I have not yet used it. My plan to to make a way for wife and daughter to sharpen knives quickly and easily. Then once or twice a year I'll reshape the shoulder of the blade edge so that they can continue using the little quick sharpen wheel tool.
