Honing (metalworking) Wikipedia
Honing uses a special tool, called a honing stone or a hone, to achieve a precision hone is composed of abrasive grains that are bound together with an adhesive. Generally, honing grains are irregularly shaped and about 10 to 50 micrometers in diameter (300 to 1,500 mesh grit).Smaller grain sizes produce a smoother surface on the workpiece.