CNC 3-axis machining is one of the most widely used techniques to make mechanical parts. “3-axis” refers to the ability of a CNC machine to perform movement about three different axes simultaneously.

In 3-axis machining, the workpiece remains still while the cutting tool moves along the 3 axes to mill the part.

This technique is computer controlled and used for milling slots, drilling holes, and cutting sharp edges. 3-axis machining allows material to be removed in 3 axes represented by back to front, side to side and up and down.

It is suitable for parts that are not too deep, but this technique is limited when trying to handle a deeper part with narrow cavities. Those projects would require a 4-axis or 5-axis CNC process.