Wiro Binding Wiro binding is an excellent alternative to traditional stitching. A metal wire is looped through numerous drilled holes in your print creating a book so your pages are able to fold back on themselves. Wiros are available in various sizes (to house a stack of paper one and a quarter inches thick!) as well as various colours. Wiro binding can also come with an acetate sheet for your front and back covers, as well as a backing board if need be.