rise

In letterpress printing, a form is the assembled collection of type, spaces, and blocks locked into the chase, or metal frame, that goes on press. When the compositor finishes locking up, they must test whether the form will hold together when lifted. A form that rises is one where every piece of type and spacing material stays in place as the frame is picked up and carried to the press. A form that fails to rise drops type, scattering individual characters or entire lines onto the imposing stone, the flat surface where the form is assembled.

The rise test was critical because a locked form sits under considerable tension from wooden furniture, quoins, and metal furniture that wedge all the pieces into rigidity. If the lock is too loose, gravity and vibration will separate the components before the form even reaches the press. Compositors achieved a good rise by ensuring every cavity in the chase was filled, every piece of type was seated fully, and every quoin was properly tightened with the quoin key, a specialized tool that expanded the metal wedges gradually to apply even pressure.

Why forms failed to rise

A form might fail to rise if the compositor neglected to fill a gap in the furniture, left a piece of type standing proud instead of level with its neighbors, or applied uneven pressure when locking up. Worn type that had shrunk slightly could also sit loose. The test itself was performed by lifting the frame vertically by its handle, or in some cases, by placing it face-down and lifting from the back, allowing gravity to work against any weak points.

The term is now dated, surviving mainly in historical references and among a small community of hand-compositors and letterpress printers who still practice the craft. Modern printing relies on photographic and digital plate-making, eliminating the problem entirely. However, the concept remains embedded in printing terminology and in the muscle memory of traditional printers, for whom a good rise was an immediate proof of competent workmanship.