Hand sharpening

The most commonly used are sandpaper and sharpening stones, of which there are many varieties. How do we choose?

According to the requirements of sanding, the choice is made according to the mesh.

Sandpaper

Different materials are used, powdered into particles of different sizes and bonded to the surface of the paper, for example, diamond sandpaper, river sandpaper, glass sandpaper and many others.

Sharpening stones
Also hard natural materials or synthetic materials processed into blocks, the size of the granules determines the size of the grit.

File
A common metal grinding tool.