Abstract: Embodiments of a tool guide are shown and described, each guide being for placement on a ski or other surface having an edge to be sharpened. The guide abuts against and travels along the ski edge that is being beveled by the tool, so that the file contacts the edge at a constant angle along the entire length of the ski, regardless of variations in ski width. The guide has an elevation member which holds one end of the tool at an elevated position, generally in the center region of the ski base, and allows the other end of the tool to rest on the ski edge. The guide includes one or more feet which abut against the side of the ski and a spacing member to connect the elevation member to the feet, so that the elevation member is kept at constant distance from the ski edge as the guide and tool are moved along the length of the ski. Little of the guide, except for the elevation member and the feet contact the ski, resulting in a self-cleaning design.