OFF-SET.—The impression made by the print against the opposite page, when a book has been rolled or beaten before the ink be dried. (Also SET-OFF.)
OUT OF BOARDS.—When a volume is cut before the boards are affixed, it is done out of boards. Nearly the whole of common work is done out of boards.
OUT OF TRUTH.—When a book is not cut square.
OVERCASTING.—An operation in sewing, when the work consists of single leaves or plates. Over-sewing.
PALLET.—The tools used for finishing across backs.
PANEL.—The space between the bands.
PAPERING-UP.—Covering the edges after they are gilt, to protect them while the volume is being covered and finished (see CAP).
PARING.—Reducing the edges of the leather by forming a gradual slope.
PARING KNIFE.—The knife used for paring.
PASTE-WASH.—Paste diluted with water.