There’s still quite a bit of machining that goes into a CNC mill build of this size ... Two of them drive the X axis with the third moving the cutter assembly along the Y axis.

This 5-axis CNC router could soon be an open source tool ... It is extremely large, and in addition to the X, Y, and Z axes that you’d expect to find on CNC machinery, it can tilt and rotate ...

Up and down is called the Z axis, side to side and front to back are the X and Y axes. The router spins a cutting bit at up to 25,000 rpm. CNC stands for computer numerically controlled and those ...