Which machining process is best suited for creating complex shapes?

CNC milling is the best-suited machining process for creating complex shapes. This is primarily due to its ability to operate on multiple axes, typically 3, 4, or even 5 axes, allowing for intricate contours and detailed features to be machined with high precision. The programmable nature of CNC (Computer Numerical Control) systems enables operators to execute a multitude of operations on a single machine setup, significantly enhancing efficiency and accuracy when producing parts with diverse geometries.

In contrast, turning is predominantly employed for cylindrical parts and linear features. It excels in creating rotationally symmetric components but falls short when it comes to forming complex shapes that require intricate detail. Grinding is excellent for achieving high surface finishes and tight tolerances, but it is not typically used for generating complex shapes. Finally, sawing is a cutting method that primarily facilitates the separation of material and is not designed for producing detailed features or complex geometries. Thus, while all machining processes have their unique applications, CNC milling stands out for its versatility and capability in shaping complicated designs.