Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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1. A term used with reference to the transformation of an adhesive into a solid (hardened) condition by means of chemical or physical processes, such as condensation, polymerization, oxidation, vulcanization, gelation, hydration, or evaporation of the volatile constituents. Adhesives vary greatly in their "sets," both in time and conditions under which they take place. Glue sets by cooling, paste by evaporation of the volatile constituents, e.g., water, etc. The final set of most adhesives used in archival work usually takes place by evaporation. This type of setting almost always results in shrinkage which, if severe, may cause the adhesive to withdraw from the surface of the joint, leaving it weakened or defective. 2. The distance between the left- and right-hand sides of a piece of movable type. Type is said to have a wide or narrow "set" according to the width of the body. 3. The peculiarities of a sheet of paper, as manifest during folding. 4. The permanence or "set" of the fibers in a sheet of paper produced by heavy calendering. (16 , 154 , 156 , 309 )

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