No, this is not one of those viral slime videos. You're looking at a process called extrude honing. But what exactly is it? Gary Kubo: Extrude honing is a hydraulically forced abrasive flow ...

Once you've gone through the honing process, test the blade on a piece of paper. Hold the paper in front of you and draw the blade from the top of the paper down. If the paper bends with the knife ...

You realign the microscopic teeth on the blade's edge using honing steel. This process is quick and easy and should be done frequently — ideally after several uses. Proper technique involves ...