In order to keep your blades in top shape, you need to know what tool is used to sharpen knives, scissors, and other tools.

While it does take a little practice and patience to get the hang of it, the Lansky 4 Stone Diamond Deluxe Sharpening System works amazingly well. As it should, given how long it has been around.

“When you know what you are doing, it's easy,” he says. “Invest time to practice sharpening regardless of the system you use, and it will become second nature.” While there are a variety ...