Abstract: A sharpener for manual sharpening of the cutting teeth of saw chains for chain saws having a depth limiter disposed in front of the cutter in the cutting direction for controlling the depth of the cut. The cutter is defined by the line passing through a free surface forming the back of the teeth and a cutting face situated on the front of the teeth. A round file is provided for sharpening the cutter by cutting processing of the cutting face. The file is adapted to the tooth front with the cutting face in cross-section. Parallel to the round file, are positioned a guiding rod, which can be placed on the free surface of a cutting tooth to be sharpened, a guiding rod, which can be placed on the free surface of an adjacent cutting tooth, and a second file which can be placed on the depth limiter of the cutting tooth to be sharpened. The two guiding rods, the round file and the second file with respect to each other corresponds to the geometry of the cutting teeth.

Abstract: An edge sharpener, in particular for sharpening the steel edges of skis, is composed of a main body in which there is a recess for holding a file blade and within which is inserted a clamping wedge so as to exert distributed forces on the surface area of the file blade when the clamping wedge is forced into the recess substantially radially. In a particular feature of the invention, the main holder has a flexible foil which comes to lie between the pressure surface of the clamping wedge and the surface of the file so that movement of the clamping wedge does not result in abrasive contact with the surface of the file. The lower part of the clamping wedge has an inclined surface which cooperates with a similarly inclined surface in the holder. The clamping wedge is further equipped with gripping surfaces so that, during manual use, the force of the hand on the sharpener to execute the sharpening strokes tends to move the clamping wedge more forcefully into the recess, thereby increasing the clamping action.