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Bookbinding, though largely mechanized in commercial publishing today, survives as a hand craft practiced by artisans who repair antique volumes or produce limited-edition works. Traditional binding involves folding printed sheets into gatherings, sewing them together along the spine, and attaching boards covered in leather or cloth to form a protective case. The choice of thread, adhesive, and covering material can significantly affect a book's durability, with some hand-bound volumes surviving centuries when properly cared for. Restoration specialists often face difficult decisions about how much of an original binding to preserve versus replace, since overly aggressive intervention can diminish a book's historical value while neglect risks further deterioration. Apprenticeships in the craft have become rare, and many practicing binders learned through informal mentorship rather than formal schools, raising concerns among industry observers about the eventual loss of specialized restoration knowledge.