I’m wondering why you don’t carry 3:1 pitch wire binding larger than 9/16″. I have 1/2″ and 9/16″ and they just don’t hold anything. I want to do larger note taking books but no one seems to carry wires that will hold any amount of paper.


This is a common question and the answer is so simple it may surprise you. The reason why 3:1 pitch binding wire is not available in diameters larger than 9/16 inches has to do with the ease of turning a page.

Let me explain: With a 3:1 pitch document (3:1 means three holes punched per inch) the punched holes in your document are much closer together than a 2:1 pitch punched document. This causes the pages of a thicker document to bind when turning.

That’s why 3:1 pitch wire has a limited diameter range. It simply will not allow the pages to easily turn if it was any thicker. We always tell customers that if they need to wire bind thicker books, they should use a 2:1 pitch binding machine. You can punch and bind up to 120 sheets with a 3:1 wire binding element. Compare that to 2:1 pitch where you can create a document up to 230 pages in size. That’s quite a significant difference.

So, why do some people prefer binding with 3:1 pitch wire? Because it creates a nice, professional look. Documents bound with 2:1 pitch wire certainly look good, but 3:1 wire provides an added touch of class.

You can view our 2:1 pitch and 3:1 pitch binding machines on our wire binding machines page. You may also see our wire binding supplies here.