Before the first step, the mixing of grain and bond, the bond must first be prepared. The bond components are mixed and ground. Vitrified bonds (abbreviation “V”) usually contain natural (clay, kaolin, feldspar) and artificial mineral raw materials (glass-like frits).
After this is done, the abrasive grain and bond are mixed in mixing machines. It is important to maintain the ratio of components specified in the recipe in order to ensure consistent quality. The mixture is then transported to the 2nd working step, “pressing”.