Profile: Warren Tooling Ltd supplies cubic boron nitride and polycrystalline diamond tooling. We also provide quality products, service and technical information. We offer insert tooling to meet the needs of both volume manufacturing as well as small batch production. We offers a comprehensive selection of CBN an PCD grades. The different grades cover the complete range of CBN application areas including finish and rough machining of hardened steels, gray cast iron, chilled cast irons & hard facing alloys & some super alloy materials. PCD can be used on a wide range of non ferrous and non metallic workpieces. It should be used where long tool life is required or where high quality surface is important or for high precision machining.