Precision machining is the process of removing material from a workpiece to chang the dimensions or properties of the workpiece so that is can become a more precise product that will meet very exact specifications.

In the machinery industry or automation industry, CAD, CAE, and CAM complement each other. Design with CAD and then manufacture with CAM. CAD is the design process using computer technology, CAE is the use of computer simulation to analyze physical problems, and CAM is the use of computers and computer software to control machines for manufacturing, usually suitable for mass-produced parts.