Turning

Turning is the process where by a centre lathe is used to produce "solids of revolution". It can be done manually, in a traditional form of lathe, which frequently requires continuous supervision by the operator, or by using a computer controlled and automated lathe which does not. This type of machine tool is referred to as having computer numerical control, better known as C.N.C. and is commonly used with many other types of machine tool besides the lathe.