CNC setting was first invented by the watch industry in the late 1980s out of the need to easily reproduce a single stone setting with very high precision and in large quantities. It is most commonly used with stainless steel or aluminum, but chromium, brass, and even precious metals can be used for CNC set. CNC is perfect for stone intensive designs and has the added advantage of being able to set on curved surfaces. The CNC machine is individually programmed for each design so the creative possibilities are limitless. Technological development is currently bringing down the previously high costs of CNC setting and makes it thus more attractive for many industries.