Detailed view of an open hardcover book on a wooden table, showcasing book pages and binding. Bookbinding faults: name the part, then write the condition note
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Part of Bookbinding Mistakes: Structural Failures to Watch For

Bookbinding faults: name the part, then write the condition note

A table of binding parts and the faults named for them, how old repairs read, and a four line condition note you can write before deciding what to do.

What to take away

  • No binders were interviewed. What follows is the descriptive vocabulary that collections use, which is more useful than remembered advice.
  • Naming a fault precisely is most of diagnosing it.
  • Old bindings were repaired with whatever was to hand, and the evidence is still visible in them.
  • Write your condition notes before you decide what to do.

Why vocabulary beats advice

Ask five people why a book will not open flat and you will get five answers. Ask what the joint, the shoulder, the swell and the squares are doing, and the fault usually names itself.

Collections have had to standardize this language because they describe thousands of objects. Borrowing it costs nothing and makes your own notes comparable from one book to the next.

The parts, and what each fault is called

PartFaultWhat it means
JointCracked, strainedCovering material failed at the hinge
ShoulderCollapsedBacking lost, spine flattening
SpineRounded, flat, concaveShape changed after sewing
SwellExcessive, insufficientThread bulk against section count
SquaresUneven, absentBoard cut or positioned badly
BoardsBowed, cupped, warpedGrain or moisture

Once these are named, a note reads as a diagnosis rather than a complaint, and two notes written months apart can be compared.

Parts and their fault names

Part

Joint
Cracked, strained
Shoulder
Collapsed
Spine
Rounded, flat, concave
Swell
Excessive, insufficient
Squares
Uneven, absent
Boards
Bowed, cupped, warped

Fault

Joint
Covering failed at hinge
Shoulder
Backing lost, spine flattening
Spine
Shape changed after sewing
Swell
Thread bulk vs sections
Squares
Board cut or placed badly
Boards
Grain or moisture

What it means

Joint
Shoulder
Spine
Swell
Squares
Boards

Read the repairs in old books

Historic bindings carry the record of earlier decisions, and some of those decisions look like mistakes now. The University of North Carolina's guide to medieval manuscript collections at Wilson Library records one such case directly: on one incunable, the external binding is composed of vellum leaves taken from an earlier liturgical music manuscript.

Reusing a manuscript as covering material was economical and normal. It also destroyed the manuscript. That is a useful thing to hold in mind when you are about to cut up something to solve a binding problem.

Rarity is a moving target

The reason to record rather than repair is that judgments change. Vassar College Library's account of incunabula observes that a significant number of the first printed books survive and are available to study, aided by scholarly efforts to compile comprehensive lists, with most residing in European institutions and a portion in American libraries.

Survival, in other words, was not planned. Things persisted largely because someone left them alone, or because they were boxed and forgotten. Restraint is a technique, not an absence of one.

A condition note that is worth writing

  1. Date, title, and what the object is.
  2. Structure and materials, as far as you can tell.
  3. Faults, using the vocabulary above, one line each.
  4. What you did, and what you deliberately left alone.

Do this for your own work as well as for anything you repair. The failure catalog behind these terms is in what binding failures look like later, and the crafts they sit across are mapped in book arts in 2027.

Writing a condition note

  • Date, title, and what the object is
  • Structure and materials, as far as you can tell
  • Faults, using the vocabulary, one line each
  • What you did, and what you left alone

Common questions

Why no quotes from binders?
None were collected. Published descriptive practice is checkable; recalled advice is not, and inventing quotes would be worse than omitting them.
Is a cracked joint worth repairing?
Often, and rarely urgently. A book that still closes and is stored flat can wait, and a rushed joint repair frequently makes the eventual proper one harder and more destructive.
What does excessive swell feel like?
The fore edge closes but the spine stays fat, and the sections splay when the book stands. Fewer sections or thinner thread fixes it.
Should I record faults in my own new books?
Yes. A note written at the time is the only way to connect a fault that appears in year three back to a decision made in week one.

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