CNC machining, especially as applied to the drilling process, has revolutionized precision and efficiency in the manufacturing of parts and components. Through the use of Computer Numerical Control (CNC) machines, precise and repeatable drilling is achieved in various materials such as metals, plastics and wood. This technology has played a crucial role in the manufacturing industry, enabling the creation of critical parts for a variety of applications, from electronics to construction. In this brief introduction, we will explore how CNC machining, particularly the drilling process, has transformed manufacturing and raised the standards of quality and precision in industrial production.