With facial area milling, the slicing action primarily normally takes place at the top corners of the milling cutter. Encounter milling is used to cut flat surfaces in to the workpiece or to cut flat-bottomed cavities. A 5-axis milling machine uses all 3 linear axes and any two rotary axes. https://millingmachinesbridgeport70788.laowaiblog.com/26475040/not-known-facts-about-cnc-milling-machines