Sharpening stones, also known as whetstones, are used to sharpen the edges of steel tools and implements through grinding and honing. These stones come in a variety of materials and grit sizes, each suited for specific sharpening tasks.

Sharpening stones vary in grit size, which determines the fineness of the sharpening action:

Coarse Grit (below 1000): Used for repairing damaged edges and setting new bevels on tools.
Medium Grit (1000 to 3000): Ideal for routine sharpening.
Fine Grit (4000 and above): Used for refining and polishing an edge to razor-sharpness.
Selecting the right type and grit of sharpening stone depends on the specific needs of the tool and the desired sharpness of the edge. Proper use and maintenance of sharpening stones can significantly enhance the performance and longevity of tools.