it doesn't actually sharpen any of the teeth for a saw blade configuration known to humankind. Circular saw teeth cut with the leading edge of the tooth shape, or with the leading face of carbide ...

(A diamond-impregnated blade is required for sharpening blades with carbide tips on its teeth, and they also make it easy to sharpen other household tools, like lawn mower blades.) The blade ...

they have to be sharpened with a special carbide silica stone. While users can expect to sharpen their floor scraper blades during a larger project, choosing the right blades in the first place ...