There’s no reason to toss perfectly good knives and scissors just because they’ve gotten a little dull. The Work Sharp Knife & Tool Sharpener By Ken Onion ($130) brings industrial knife sharpening home. This tool is designed to sharpen every knife you own. It features a fully adjustable sharpening guide, and variable speed 3/4″ x 12-inch flexible abrasive belts that can sharpen straight blades or serrated kitchen knives. Professional blade makers like Ken Onion use flexible belts for razor sharp blades. Now you can too with the Work Sharp Knife & Tool Sharpener.