Common Bookbinding Mistakes (and How to Avoid Them)

We’ve all been there—you’re halfway through a beautiful handmade book when something goes sideways. Maybe your thread tangles, your signatures slip, or your cover ends up just a little… wonky. Bookbinding is a craft of precision, but it’s also a practice of patience. The good news? Most common mistakes are easy to fix—or even better, avoid entirely with a few thoughtful tweaks.

Here are some of the most frequent bookbinding missteps we see (yes, even among seasoned makers!)—and some tips for sidestepping them:

1. Cutting Corners—Literally

The Mistake: Not trimming your corners properly when wrapping book board can lead to bulky folds, bunched-up fabric, or exposed edges that fray over time. It’s a tiny detail—but it makes a big difference in the finished look of your book.

How to Avoid It: Clean, crisp corners start with the right cut. You can use a handy corner mitering tool like this one by Colorway Arts. 

If you’re not using a corner mitering tool, you can easily do it by hand:

• Before you cut, grab a small offcut of book board (or the one you’re using) and use it as a spacer—line it up with the corner and mark a diagonal cut about 1/8″ away from the tip of the board. This extra bit of space gives your material enough room to wrap smoothly around the corner without bunching or exposing the edge.
• Not sure if your cut is angled correctly? Your cutting mat is a great guide. Most mats have 45° lines printed on them—simply align your material and ruler with those lines to make accurate, repeatable cuts.

After trimming, fold the sides in and use a bone folder to tuck the corner before wrapping the second edge. You’ll get a nice, tidy point every time—no lumps, no gaps, just clean craftsmanship.

2. Loose or Wobbly Signatures

The Mistake: You flip through your book, and the pages shift, wiggle, or sit unevenly. It might still function, but it doesn’t feel solid.

How to Avoid It: The most common culprit? Inconsistent sewing stations (the holes in your paper). If your holes aren’t aligned across all signatures, your stitches won’t hold the book block evenly.

Use a punching cradle to keep your holes in exactly the same place for every signature. If you don’t have a cradle, you can watch this video to learn how to make your own.

When you sew, keep your thread snug—but not tight enough to rip the paper or bow the spine. Think of it like tying your shoelaces: you want it secure but with a little give. Stop occasionally to press the signatures together and check their alignment as you go.

3. Skipping the Signature Press

The Mistake: Jumping straight into sewing without pressing your signatures can leave you with a bulky spine, uneven page edges, or a book block that refuses to lie flat.

How to Avoid It: Before you sew, give your folded signatures a gentle but firm press. This helps the folds stay crisp, reduces air pockets between pages, and creates a tighter, more professional-looking book block.

You don’t need a fancy press—just stack your signatures neatly, place a cloth-covered brick or heavy book on top, and leave them for a few hours (or overnight if you have time). 

Pressed signatures not only make sewing easier—they also help your finished book open more evenly and look more polished overall.

4. Tangled Thread

The Mistake: Your thread twists, knots, or even snaps while you’re sewing—a frustrating interruption that can throw off your whole flow.

How to Avoid It: First things first: use thread that’s the right length. It’s tempting to cut a long piece to avoid re-threading, but longer thread is more likely to tangle. A good rule of thumb is 4 to 5 times the height of your book, depending on the stitch pattern.

Waxing your thread is a game changer—it reduces friction and helps your thread glide smoothly through each hole. You can use beeswax or pre-waxed linen thread. Run the thread through the wax a few times, then pull it between your fingers to distribute the wax evenly.

If your thread starts to twist while you’re working, pause and let your needle dangle freely to unwind. This simple habit can save you a lot of time (and irritation).

5. Skipping the Paper Grain Check

The Mistake: Folding or binding paper against the grain can cause all sorts of issues—cracking along the fold, stiff page turns, or a book that won’t lie flat.

How to Avoid It: Always test the grain direction before you fold, glue, or sew. To check, gently bend the paper in both directions. One direction will offer more resistance—that’s against the grain. The direction that bends more easily is with the grain, and that’s the one you want. Check out this video for more tips on how to determine paper grain. 

For book pages, you’ll want the grain to run parallel to the spine. This helps the book open and close smoothly and reduces wear and tear over time. The same rule applies to cover materials and endpapers too!

If you’re making your own text blocks or cutting large sheets, try to plan your cuts so the grain stays in the right direction throughout the project.

6. Over- or Under-Glueing

The Mistake: Too much glue leads to bubbles, wrinkles, and warping. Too little glue can leave corners lifting or layers peeling apart.

How to Avoid It: The goal is a thin, even layer. Use a flat glue brush or foam roller and spread from the center outward to avoid pooling. Think of it like spreading jam on toast—you don’t need a mountain of it, just enough to coat the surface without oozing out the sides.

Work quickly but carefully. Most glues (like PVA) start to tack within a minute or two, so plan your steps ahead of time. And always use a scrap piece of paper or a glue board underneath to keep your workspace clean and prevent sticking.If you do notice excess glue oozing out, wipe it away gently with a damp cloth or scrap paper before it dries to avoid shiny spots or glued-together pages.

7. Rushing the Drying Time

The Mistake: You’re excited to see your finished book—but if you remove the weights too early, your book might warp, pop open, or shift out of alignment.

How to Avoid It: As tempting as it is to peek, let your book dry completely under weight. Ideally, this means leaving it overnight or at least 6–8 hours, depending on humidity and glue thickness.

Stack a clean sheet of wax paper over your book to prevent sticking, followed by a few sheets of blotting paper or scrap newsprint to absorb moisture. Then place a heavy, flat object (like a stack of books or a book press) on top.

If you’ve added decorative elements or fabric that need airflow, dry them in stages—press the cover flat first, then glue the text block once the cover is fully dry.

A Final Thought…

Mistakes are part of the learning process. They’re frustrating, sure—but they’re also teachers in disguise. With each misstep, you’re becoming more familiar with the materials, the process, and your own unique rhythm as a maker.

And if you ever find yourself knee-deep in a bookbinding snafu, remember: the Handmade Book Club is here to help. Post your questions, share your “oops” moments, and let’s figure it out together. You’re not alone on this creative path.

Happy binding!

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