Milling is the process of machining using rotary cutters to remove material by advancing a cutter into a workpiece. This is achieved by cutting along one or several axes, adjusting cutter head speed, and applying different amounts of pressure on the material.

Milling covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. It is one of the most commonly used processes for machining custom parts to precise tolerances.

CNC (Computer Numeric Controlled) mills automate this painstaking process. The more axes a machine has, the more complex a part it can manufacture.

CNC mill workers use 3-D computer models of parts to create tool paths that tell machines when to rotate and where to cut, allowing the machine to follow these instructions with minimal human supervision. This can make production faster and more consistent, efficient, and cost-effective.