Wire Binding FAQ How much space do I need to leave for my wire calendar hanger when I use my half-moon punch?You need 5/16"from the edge of the paper to the bottom of the half-moon notch. What does “pitch” refer to on my wire or coil binding machine?Pitch refers to the number of holes per inch. So 2:1 pitch would have 2 holes punched per inch of paper; 3:1 pitch would have 3 holes, and so on.