Wire-O Binding

Wire-O Bound Books

Wire-O Binding, also known as Twin Loop, Double-Loop, Double-O, Duo-Wire, or simply Wire Binding, is an attractive method for joining the pages and cover of a bound document.
Wire-O binding offers many of the same benefits as spiral coil binding, but is more sophisticated in appearance. As such, it produces a very impressive document. Also, it can accommodate pages and inserts of varying thicknesses, including dividers or index tabs made from heavy cardstock.
The Wire-O binding method utilizes pre-formed pairs of wire loops that run along a C-shaped unit. These wire loops are inserted through holes that have been punched through the book’s cover and pages. The loops are then crimped closer together until they form a perfect circle, thus securing the cover and pages as an assembly, yet allowing them to open freely.