The garage-dwelling makers in the audience are undoubtedly familiar with CNC milling, a subtractive process that involves a spindle, some raw material, and lots of noise. But 5-axis CNC milling is a whole new treasure trove of discoveries. Computer numerical control, commonly referred to as CNC, is a term used to refer to the system in which a toolhead moves along predetermined paths to accomplish a variety of tasks, such as drilling, cutting, printing, or milling. In maker communities, the term “CNC” is often used to refer to CNC milling, a process involving a spindle as a toolhead. However, it is worth noting that CNC can also be used for much more than just milling.  As far as this article is concerned, CNC milling is a process in which a cutting tool systematically removes material to produce some final geometry. In this subtractive process, a computer handles the conversion of a CAD design into coordinates, which are turned into instructions used by the cutting tool to remove material and reveal the final object. CNC milling machines with five axes are simply advanced variants of regular milling machines, where the cutting tool moves along five different axes simultaneousl...