What does 2:1 and 3:1 pitch mean?
A. This number refers to the number of holes per inch on a document, i.e. 2 holes to the inch for 2:1 and 3 holes to the inch for 3:1. This pitch system relates to wire binding. Typically 3:1 is used for all documents up to 100 sheets. Due to the nature and construction of wire at a size 10 wire and approximately over 100 sheets, you will have to use a 2:1 pitch punch in addition to a 3:1 pitch. The only alternative is using a 2:1 pitch machine and using 2:1 pitch wire, which is now available in all the smaller sizes. You will need to contact us if you need assistance in this area.
