The back, neck and pegbox were probably usually carved from one piece of timber. Occurring less rarely later in the 15th century, the back was built up from a number of thin tapered ribs joined at the edges, as was characteristic of the lute. Unlike the sharp corner joining the body to the neck seen in the lute, the gittern's body and neck either joined in a smooth curve or straight line. The sickle, or occasional gentle arc pegbox, made an angle with the neck of between 30-90 degrees. Unlike the lute, most pegboxes on gitterns ended in a carving of a human or animal head.