Computer numerically controlled (CNC) operators program computer based machines to perform a variety of functions in numerous industries, namely in the scientific and automotive fields. These fields contain machinery that rely upon repetitive operations, such as drilling and cutting, and machines must be programmed to drive these machines. In order to become a CNC operator, an individual must posses a thorough knowledge of the sciences and computer programming.

In addition to taking numerous science, mathematics, and physics courses, you should also study blueprint drafting, machine operations, and metal and/or plastic working. Often, an individual must have a knowledge of computer-aided design (CAD) and computer-aided manufacturing (CAM) software.

Assembly lines were updated and rebuilt with numerically controlled machines beginning in the 1940s and 1950s. Their purpose was to take the recurring functions performed and to update them so they could be quickly analyzed and carried out by computers. The information did not need to be individually logged or handled, but rather, was able to become a part of a long tape that read the information quicker and more efficient than before. The programmers and overseers of the individual functions that must be added into the machines has become known as CNC operator.

Today, the main purpose of a CNC operator is to take machine blueprints and to program the code and information into the computer performing the task. One machine can be responsible for many individual tasks, and it is the CNC operator's job to make sure that the individual steps are programmed correctly. He or she also looks for the most time and cost efficient methods of programming.

After high school, a vocational school or college is usually necessary in order to become a CNC operator. Expertise in this field is learned through the rigorous and intense study of specific aspects of one topic. Students must gain a thorough knowledge of how the machine is operated and how that operation can be translated into computer coding. For example, if you were to become a CNC operator who works with laser cutting machinery, you should study both the laser cutting machine and the various methods by which it can be done.

After the proper training is completed, you can begin your path to become a CNC operator by researching local factories and businesses in your area. In addition, there are numerous websites geared specifically for individuals seeking jobs in the field. Additional certifications, such as being able to set-up and program the machines, can also help an individual's credentials.