Presentation Topic: Guarding Signatures for Resewing
Sometimes a book can be resewn without having to treat the folds of the signatures.
Often, however, the outer folds of the signatures are broken or weakened, and must be strengthened before resewing.
Dominic will show the various steps involved in this process. He will begin by demonstrating how to make an ingenious jig, the Guard-O-Matic, which was developed at the Library of Congress in the 1980s. Made from readily available materials — Plexiglas, Mylar and polyester fabric — it is essentially a non-stick hinge that helps wrap pasted strips of repair paper around a signature.
Dominic will then talk about Japanese paper — how it is made, a brief history of its use in conservation, where to source it, and how to select the right one for the repair. Then he will show how to score, wet and tear the strips used to repair the signatures. He will talk briefly about the preparation of paste, before demonstrating how to paste out the strips and attach them to signatures using the Guard-o-Matic.
Finally, Dominic will explain how to dry the signatures, trim excess repair paper and press them before resewing.