Opening boards

English

"The operation in hand binding of opening the boards of a book when the leather covering is well set but not completely dry. As each board is opened it is pressed toward the joint, both being pressed at the same time so that the boards will open just at the top of the shoulders."<ref name="Etherington">Roberts, Matt T. and Don Etherington. "Opening boards". Bookbinding and the Conservation of Books, A Dictionary of Descriptive Terminology. Conservation Online, 1994. Web. 28 March 2016.</ref>

Setting the joint