Master Grade Premium Multi-stage Electric Knife Sharpener Do you ever wonder why many electric knife sharpeners dont work, some only work on a new knife but when the knife becomes dull, the electric knife sharpener cant make the knife sharp? It is because most of them designed by an engineer with no sharpening knifes skill. Master Grade sharpener is designed by a knife master who knows how to sharpen knife sharp. It is very easy to use, when your knife is not really dull just pass it through the slot couple times, fine slot left and right, otherwise start with the coarse slot couple passes to thinning the blade then use the fine slot, lighter and lighter to get the sharpness you want. When your knife still has its angle, the machine will sharpen and follow the angle, not to change it. Our sharpener able to put back a new angle up to 2 mm that most of sharpeners cant do, most of them only sharpen your knifes cutting edge, which you can use our heavy duty manual sharpener to do it with less money. Master Grade sharpener can make your knife sharp and use again and again.Celebrity chef Martin Yan endorsed this sharpener as the one that works, after testing it rigorously. We built it using the best materials there are in the world. This machine is compact, durable and will sharpen your knife sharp. It performs even better than many other brands commercial sharpener that cost around $500. It cant sharpen serrated knife but it can sharpen recurve blade knife. Master Grade Premium sharpener uses by many chain restaurants, chefs, home chefs, hospitals, schools, hunters, caterings, etc. Sharpening knife is easy and fun and Master Grade sharpener can sharpen knife sharp in seconds.