Finally got around to taking a few pics on sharpening hedge trimmers. You can buy the belt sander at Northern Industrial tools .Cost about $65. Be sure to buy extra belts as it only comes with 2. It may take you a few belts to get comfortable with it.. Offset the blades and sand the blade edge....once its shiny ,its sharp. When you get all the edges you can get to, rotate the blades and get the rest of them. Dont forget to snug the adjustment bolts.....not so tight that the blades dont rotate.