CNC Milling Machine Parts [Complete DIY Guide
The axes of a CNC Milling Machine allow motion using Cartesian coordinates programmed via gcode and via manual jogging from the control panel. Generally, there are 3 axes that correspond to X, Y, and Z. An optional 4th Axis is an accessory for CNC Milling Machines. 5 axis milling machines are possible but not very common in the DIY CNC world.