Adhesive Binders — Perfect Fit

Quality is a relative term, though, since perfect-bound books never look as classy as case bound books, says David Spiel of Spiel Associates. There are very definite points of distinction within the adhesive binding segment itself, he adds. "Some of the less expensive perfect binders just notch the book block. Since only those areas get good glue penetration, the books can fall apart with heavy use. You need full milling and notching to get a strong book.