Bookbinding Case Calculator

The case is worked out from the text block outwards. Each board is cut to the page height plus the square at head and tail, and to the page width plus the square at the fore edge less the hinge allowance at the spine, so the board never reaches past the joint. The spine strip bridges the two boards: it spans the text block thickness plus the hinge allowance on each side, plus one board thickness of lap onto each board. The assembled case is therefore two board widths plus the spine strip, and the covering material adds a turn-in on all four edges. Areas are reported in square metres and square feet. Everything is calculated in your browser; nothing is sent or stored.