How does the SharperBlade self-sharpen?

SharperBlade’s have a thin, yet heavy duty, nylon mesh molded into its flexible, resilient plastic blade. The nylon is precisely placed throughout the blade's cutting edge. As the blade rotates, cutting grass or weeds, fresh new nylon mesh is exposed, at the blade's edge. This patented technology ensures your blade will maintain a sharp cutting edge throughout its entire use.