Below are some examples of the Coptic Stitch. This is a non-adhesive binding, meaning that the structure is only held together by the linen thread I used. Don't worry it's strong. Way back when, folks used to traditionally use wooden boards as covers. Holes are created (by either punching or drilling depending on the cover material) in the sides and through the edges of the boards where the thread will enter and eventually be hammered into place.