text:  resting against an angle guide to give you control. And then you power on and draw the knife through to sharpen one side. And the same thing on the other side. There's another angle guide. You can sharpen both sides of the knife back to a very factory level of sharpness. We use the same set of abrasives that are used in a lot of factories. They're specifically designed for cutting metal, being cool, and lasting a long time.