I convexed mine after I got it, did my KaBar Kukri also. Both cut like a banshee. My method involves leather (old belt) or rubber strip glued to a stick (about 1 1/2 inches wide quarter inch thick) with sand paper attached by a spring clip. Works almost like a strop with the leather or rubber flexing a little as the edge moves over it. Can shave hair from my arm with it on those thinner blades, and the edge holds up.