What is the main advantage of CNC machines over manual machines?

The main advantage of CNC (Computer Numerical Control) machines over manual machines is the increased accuracy and repeatability they offer. CNC machines utilize programmed instructions to control their movements and operations, which allows them to produce parts with a high degree of precision. This means that the dimensions and tolerances of the finished product can be maintained consistently across multiple operations and production runs, which is difficult to achieve with manual machines that rely on the skill of the operator.

In addition, CNC machines are capable of performing complex machining processes that would be exceedingly challenging or time-consuming when performed manually. The combination of software control and automated functions ensures that parts are produced exactly as specified, reducing the likelihood of human error.

While reduced operational costs, improved craftsmanship skills, and quicker setup times can be considerations in the use of CNC machines, they are secondary benefits when compared to the significant advancements in accuracy and repeatability that CNC technology provides.