Why use something as expensive as diamond as a cutting material?

If you manufacture a product made from an abrasive material, you need the right tool for the job. Anything less than diamond will undermine your attempts to achieve correct size and finish. Tool wear causes inspection failures and works against your goal of providing the best for your customers. Poor finishes, undersized holes, mismatches on contoured surfaces due to required tool changes, for example, are the effects of a tool that wears prematurely.

Diamond is the hardest and most abrasion-resistant material found in nature. It is chemically inert with most materials, it is the best thermal conductor in nature and it is electrically non-conductive.

Diamonds can be created using heat and pressure (as in nature) or heat and vacuum. The CVD process uses heat and vacuum to grow diamond crystals and is a cost effective way of creating diamond.