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 ...

It acts as a channel to guide the cut material out of the hole created by the two cutting edges. We will file each of the relief areas to sharpen the drill bit, maintaining the same angle as these ...

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 ...