Leaf Attachment Means by which leaves of a textblock are attached to one another along the binding edge. M argin Space around the edges of a page outside the printed or written matter. Milling The spines of books can be cut away on a milling machine to prepare them for double-fan adhesive binding or oversewing. After milling, a text block is comprised of loose leaves. Also called a French joint or French groove, hinge, gully, channel, and outer joint.
P aste down The half of an endsheet that is pasted to the inside of the cover board.
Results in a very strong bond. R ecase Process of fitting the textblock with a new case when the original sewing thread of the textblock is unbroken and intact. Rounding Process of hammering or manipulating the textblock spine into a convex shape preparatory to backing. Rounding diminishes the effect of swelling caused by the thickness of the sewing threads or the application of glue from an adhesive binding. It also helps to prevent the textblock spine from falling into a concave shape after years of use or of standing upright on a shelf.