Rolling knife sharpeners have been something of a viral sensation recently and promise to make knife sharpening easy. They all work on pretty much the same principle: a magnetic block holds the knife ...

So CNET tested the heck out of some sharpeners to figure out which ones will always result in a sharp knife. With these recommendations, you won't have to worry about the angle or anything else ...

The whetstone method is the traditional way to sharpen a knife. It takes a little longer than the other two methods, but you get to control how much metal comes off, and the angle isn’t locked ...