PCD (Polycrystalline Diamond) has been available for milling non-ferrous abrasive materials for many years. The common method of tool production has been grinding using Diamond grinding wheels.

The forces required to grind PCD with Diamond are extremely high. This means that it has been very difficult to produce cutting tool inserts accurately enough to work properly in the fixed
pocket milling cutters commonly available. Cutters with adjustable pockets for the inserts were developed, but these require care and patience to set up and are expensive to buy and repair.

Using the latest Wire erosion technology David Richards have developed techniques which produce PCD tipped cutting tool inserts that are as accurate as Precision ground carbide.

Installed in the best quality Diamite cutter bodies, Diamite PCD inserts provide all the Tool life and quality advantages of PCD with the convenience of Carbide.