Coborn's entry into the diamond grinding market has been an evolutionary process, based on our fundamental skills in balancin ... g and spindle design. Coborn has a unique, global position supplying specialised, individually built, high-precision equipment to the polycrystalline diamond industry and the gemstone and natural diamond tooling industries, with over 80% of machines being exported throughout the world. In addition to the RG machines for the PCD tooling market, the other products include Planetary Grinding (PG) machines for natural diamond and single crystal diamonds, scaif spindles, high-frequency milling and grinding spindles, dynamic balancing machines, lapping, polishing and edge honing machines. read more