Golden Star

Golden Star is an EDM sharpener that also includes the popular AS-9 and Orange series. The abbreviation EDM means that these stones can be used for processing metal surfaces after electric spark cutting. In this case, the hardness of near-surface metal layers after electrospark processing can exceed 70HRC. It is for working on such materials that the Golden Star series is intended. The main recommendation for use is carbon steels. The Golden Star series is non-impregnated, has an open structure, requires soaking before use and is generally recommended for use with water or water soluble cutting oils.