Wire binding is an affordable option for small to mid-sized printing projects, and is very popular for documents as well as other items like calendars. Wire binding uses C-shaped wires that are threaded through the holes of a document and then squeezed closed.
Wire binding is professional looking and durable, but it costs more than both comb and coil binding methods. Wire binding is flexible, allows documents to be fully opened on themselves, accommodates a fairly wide range of book thicknesses, and is fully permanent. Wire binding helps printed products last longer even with frequent opening and handling.