Once sharpening day rolls around, electric knife sharpeners are an easy and convenient way to maintain your knives at home. Manual sharpeners can take a lot more time and lack power. And whetstones, the favorite of many professional chefs, takes a lot of time, precision, and practice to master.Remove the blades from the motor or handle if you can. Start by matching the correct section of sharpening rod to the curve of the serration. Then, keeping the rod flush with the bevel, run it across the serrations. Good practice states that you should treat each serration about five times—so plan ahead.Our Favorite. The Wüsthof Easy Edge Electric Sharpener edged out the competition thanks to its effectiveness and ease of use. It is capable of standing up to professional environments as well as home kitchens. For sharpening on a budget, the Longzon 4-in-1 Knife Sharpener offers an impressive price-to-performance ratio .