A Punch Press is a machine that has a set of punches and dies, a male (punch) and female (die), which when pressed together put a hole into the material used that is the same geometry as the punch that is being used. The punch press machine can be small and manually operated and hold one punch and die, or be very large, CNC operated, and hold many punches and dies of various sizes and shapes. Die can refer to: To die is to undergo death. ... Geometry (from the Greek words Ge = earth and metro = measure) is the branch of mathematics first introduced by Theaetetus dealing with spatial relationships. ... This is an article about computer-controlled machines; for an article about the French bicycle manufacturer, see CNC A CNC Turning Center The acronym CNC stands for Computer(ized) Numerical(ly) Control(led), and refers specifically to the computer control of machine tools for the purpose of (repeatedly) manufacturing complex...