Best approach for broken sewing bands when consolidating the spine?

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This book was sewn on tapes. The upper tape is broken on the front hinge, and the lower one is broken on the back hinge (see photos).

The detached pieces of the tapes can still be recovered. They are under the paste paper, on the covers. But I guess that trying to reattach them by re-sewing or gluing might create a bulge, and future friction, on some already weak spots.

I think about a discrete but somehow more solid consolidation, with cloth/ Japanese paper all over the spine, and over the existing sewing tapes, while allowing larger cloth margins which will go under the paste papers.

I find the original binding was not solid enough, and/or the sewing tapes not long enough, given the book size (23 x 31 x 5 cm).

Any thoughts on this? Am I thinking about the right approach?

Is there a more appropriate approach, and could I find it in some of your courses?

Thank you!

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    User Avatar Posted by (Questions: 1, Answers: 0)
    Asked on September 18, 2023 9:10 am
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    Hi there, What you need is a new text-spine lining that extends to tuck under the paste-downs. The original binding had tapes as well as some mull. The mull is just barely visible in the photo. The old tapes can be left for extra strength but the new text-spine liner could be done with muslin vs mull for extra strength. I hope this helps! It should be fairly easy to lift the paste-downs using the book repair knife to tuck the new material under when you are casing-in. Thank you Gaylen for jumping in with an answer! I will always try to get these questions anwered in a timely manner, but sometimes I can't get to it right away. :)

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    User Avatar Posted by (Questions: 1, Answers: 275)
    Answered on September 24, 2023 8:49 am
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      So the attached pics appear to show that literally only the tapes were trying to hold the text block to the boards, and the endsheets could not hold the weight. Your approach sounds reasonable but it is not clear due to level of detail. I will leave it to Sophia to specify specific course(s) on this site but you might consider Sophia on YouTube. Search for Save Your Books Fairy Tale - Live Restoration. This 7 part presentation, I believe, will answer your question(s) plus it is VERY complete in its offering. This sequence is one of THE best on the Internet, IMHO.

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      User Avatar Posted by (Questions: 41, Answers: 28)
      Answered on September 21, 2023 9:50 am