Pleger, John J · Chicago : The Inland printer company · leaf 116
back. This may be repeated once or twice, but each timethe round must be worked in with the bended index fingerand thumb of the right hand before tapping the back. Tohit the book on the first and last signatures of the book … forces them over, and makes it impossible to obtain aperfect ridge in backing. A perfect round is about one-third of a circle. In edition shops, the rounding of a bookis accomplished with not more than eight taps of the ham-mer. Every move is made to count.8 102 BOOKBINDING Blank-book rounding is…
Bookbinding
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