How to make glass beads

How to make glass bead 2. Coarse grinding: Put the spherical blank into two concentric ring-shaped grinding discs of the same size and triangular grinding grooves in the upper and lower parts that match the size of the blank, add oil and rough abrasive; The grinding disc does not move. The above ball grinding machine is called a coarse grinding machine. 3. Cleaning: After each rough grinding is completed, the oil and coarse abrasive residues sticking to the surface of the ball must be washed. 　　 4. Fine grinding: Put the rough grinding blank into the fine grinder; add low viscosity oil and fine abrasive, Grind to standard size; 　　 5. Polishing: The process is similar to rough grinding and fine grinding.