For nearly 70 years, Coborn Engineering has been actively involved in many aspects of machine tool design and manufacture. Established in 1941, the company initially manufactured high precision spindle and balancing machines. In 1962 this developed into manufacturing Scaif Spindles and Planetary Grinding (PG) machines for the gem and single crystal diamond industry. Then, with the introduction of polycrystalline diamonds in 1978, Coborn designed and manufactured the Reciprocating Grinding (RG) machines. In 2002 Coborn also introduced a laser cutting machine for PCD.