In this video, we learn how to sharpen a knife with a convex edge. First, you will need to have your knife and your edge ready at hand. Now, grab your knife and lay it flat on a surface. After this, grab your convex edge and brush the knife against it. Brush the knife along it on both of the sides until you feel that the knife is sharp enough. When you are finished, try cutting something with your knife to see how sharp it is, then sharpen again if you need to. Make sure to keep the paper over the edge wet so you can continue to use it.