Sharpening knives can be intimidating, but it’s an essential step to lengthen the longevity of your blades, chop items with ease and ensure safety in the kitchen. Work Sharp’s Ken Onion Edition Knife and Tool Sharpener looks like a heavy-duty power tool—and it is one—but it’s designed, in collaboration with knife-making pro Ken Onion, for professional chefs and home cooks alike to maintain their knives with precision and control. There’s no guesswork: The bench-top sharpener lines up to any edge. Then simply switch on the machine—which has a 7-speed motor—and start grinding away on the gritted belt. We tried out all kinds of knives, from santokus to paring knives to serrated Milk Street blades like the Tri-Edge and Kitchin-tan, and the results were consistent: professional-level, razor-sharp edges. We love that this version comes with a separate blade grinding attachment, which gives the user the power to free-grind blades up to 35 degrees. Plus, it can grind pocket knives, kitchen scissors and axes or sand and reshape wooden knife handles.