We recommend getting professional sharpeni8ng for all your knives. A professional uses specialized grinding equipment to restore the edge on the blade. A good knifemaker has knowledge of different grinds, and which ones suit your knife. If you're out in the wilderness, and your knife blade dulls, you can attempt a self-sharpening. Self-sharpening requires an Emory board and whetstone. According to the manufacturer's instructions, you'll need to sharpen the blade at a specific angle, between 22 and 30 degrees. Therefore, we recommend avoiding sharpening your knife yourself, unless you have the know-how