Coborn Engineering - Engineered Solutions for the Diamond Industry

Engineered solutions for the diamond industry.


Discover more about our toolmaking solutions


80% of all high value diamonds are polished on a Coborn scaife

Mapal style square tool


Discover which Coborn machine will meet your requirements

Coborn Heritage

Coborn Engineering has been actively involved in many aspects of machine tool design and manufacture for over 80 years. Established in 1942, the company initially manufactured high precision spindle and balancing machines.

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Reciprocal Grinding

The Reciprocating Grinding series of machines are primarily designed for grinding Polycrystalline Diamond (PCD) and Polycrystalline Cubic Boron Nitride (PcBN). The machines range from manual entry level to fully autonomous systems for lights out production, with tooling and accessory options to cover all applications.

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Planetary Grinding

The Planetary Grinding series of machines are specifically designed for grinding single crystal diamond. The planetary motion of the wheel allows the grinding direction to be changed so the ‘soft’ direction of the diamond can be found. The choice of machine depends on the application and the level of accuracy required.

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Service & Support

Coborn provides machines, technical support and services all around the world. This is only possible through our global network of partners

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The RG9A is supplied “robot ready” and the optional Staubli 6 axis robot can be added to the machine to facilitate fully autonomous “lights out” production of tools. The programming and setting of the robot couldn’t be easier, with custom written macros embedded into the main control and a library of work holding accessories to …

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