All serrations are hand sharpened with specialized diamond tools and then hand polished using our own proprietary equipment and process. Plain edged sections on combination blades are sharpened on water cooled Cubic Boron Nitride sharpening systems and then hand stropped. If you only want the plain edged portion of a combination blade sharpened, please use our western standard knife sharpening service using the length of the plain edged portion as the blade length. We currently do not offer sharpening of very fine serrations less than 1/16 of an inch in length.