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CNC Axes Explained: 3, 4 & 5-Axis, Trunnion vs Swivel Head, and When You Need Them
What CNC axes actually are and how the axis count changes what a machine can do — linear and rotary axes, 3-axis to 5-axis, the trunnion-versus-swivel-head choice, and 3+2 versus simultaneous five-axis, decided by your part's geometry.