The First Book I Made Fell Apart in a Week
I cut my first set of covers out of a shipping box. Not book board. Corrugated cardboard, because it was free and I was proud of being clever.
The book looked fine for four days. Then the humidity came back, the corrugation flattened, and the whole case curled away from the text block like a dead leaf.
I had spent eleven hours sewing those signatures. The sewing was fine. The sewing was actually good. What failed was the cover I built around it.
Here is the part that stung. The board I should have used cost about six dollars a sheet. I saved six dollars and lost a weekend.
So this is the article I wish I'd had. Case binding, start to finish, with the measurements and the mistakes. No expensive equipment, no press, no workshop. Just a few real materials and some patience.
What Case Binding Actually Is
A case binding is three separate things that only meet at the very end. The text block, the case, and the paste-down that marries them.
The text block is your folded and sewn signatures, glued along the spine. The case is the boards and cloth cover, built flat on the table like a small piece of furniture.
Then you slide the text block into the finished case and glue only the endpapers to the boards. That's it. That's the whole trick.
Because the spine of the case is never glued to the spine of the text block, there's a hollow space at the back. The book opens flat, the hinge flexes in cloth instead of paper, and the sewing never carries the weight of the cover.
That hollow back is why a hardback from 1950 still opens without cracking. It's also why your case has to be measured generously. Tight case, dead book.
Why Not Coptic or Perfect Binding?
Perfect binding is what paperbacks use. Clamp the block, saw notches into the spine, glue it. It's fast and it's cheap, and every page is held by a quarter inch of adhesive.
Leave a paperback in a hot car and you'll see the failure mode. The glue goes brittle, the pages let go in a block, and there is no repair that doesn't look like a repair.
Coptic binding is the opposite extreme. Exposed sewing, open spine, boards attached through the stitches. Beautiful, opens completely flat, and it's my favorite structure to look at.
But coptic leaves the spine exposed. No glue, no mull, no protection from a backpack or a toddler. It's a notebook structure, not an archive structure.
Case binding sits in the middle where I want to be. Hidden sewing, protected spine, boards that take a knock. If you want a book your kid still has in twenty years, this is the structure to learn.
The Materials, With Actual Numbers
You can spend two hundred dollars on bookbinding supplies. You don't need to. Here is what one book actually requires.
- Book board (Davey board): 2.5 mm, sold as 98 pt. For books taller than 9 inches, step up to 3 mm, which is 120 pt.
- Book cloth: a yard of paper-backed linen or cotton. Paper-backed matters. Plain fabric frays and glue soaks straight through it.
- PVA: a 16 ounce jar of acid-free PVA. This is your structural adhesive.
- Wheat paste: a small bag of wheat starch, cooked thin. Slower, reversible, and much kinder to cloth.
- Mull (super): open-weave cotton gauze, about 1 mm thick.
- Headbands: a pair, pre-made, or sew your own from silk thread.
- Thread: waxed linen, 18/3. Linen, not cotton. Cotton stretches and saws through the fold.
- Tapes: 10 mm cotton twill tape, three strips for a book this size.
- Endpaper: two folded sheets of 120 gsm paper, in a color you actually like.
- A press: two flat boards and whatever heavy things live in your kitchen.
Total for a first-timer buying everything new: about $55. That covers four or five books, so the second one costs closer to ten.
One note on paper. Text-weight stock between 80 and 100 gsm folds cleanly and doesn't show through. If you want to go further, handmade paper makes lovely endpapers and section dividers, though it's too soft for a whole text block.
Folding and Nesting Your Signatures
A signature is a group of folded sheets nested inside one another. Four sheets gives you sixteen pages. Five gives twenty. For a first book, keep it at four.
Grain direction is the thing nobody tells you. The grain must run parallel to the fold, which means parallel to the spine. Fold across the grain and the pages will wave and the fore edge will never sit flat.
To find the grain, flex the sheet both ways. It rolls easily along the grain and resists across it. Mark the corner with a pencil before you cut anything.
Fold each sheet over a bone folder, crease it hard, and stack them in sets of four. Tap the spine edge of each set on the table until it's even.
Now nest them and check the set. The fold of the inner sheets should sit tight against the fold of the outer ones, with no creeping at the head. If the folds drift, your fore edge becomes a staircase later.
Make three or four of these. Four signatures of four sheets gives a sixty-four page book, which is a real book and a manageable first project.
Punching Holes and Sewing Over Tapes
You need a sewing cradle, or something that behaves like one. A folded stack of scrap board with a V cut into it holds the signature open at the fold so your awl goes straight through.
Mark your stations on a paper template first. For three tapes, put a station near each end about 15 mm in from head and tail, then pairs flanking each tape.
- Open the first signature at the fold and lay the template inside. Pierce every station with an awl, straight down, all the way through the fold.
- Stack the remaining signatures on the template and pierce them the same way. Same holes, same places, every time.
- Thread your needle with about three feet of waxed linen. Drag it over a candle stub again. It should feel slick, not sticky.
- Start inside the first signature at the bottom station, leaving a three inch tail. Sew up the inside of the fold, out at the next station, over the tape, back in.
- At the top, come out, go around the tape, and link into the kettle stitch. That chain locks this section to the one below.
Sew the second signature the same way in reverse, and link it to the first at the tail with another kettle stitch. A kettle stitch is just a half hitch around the thread running between sections.
Keep the tension even. Not tight. A death-grip thread pulls the signatures out of square, and the spine will curve like a banana when you glue it.
When you finish the last section, tie off inside a signature and trim the tail. Then press the whole block under boards overnight.
Gluing Up the Spine and Adding Mull
Now the block gets its spine. Fan the sections slightly, knock them square, and clamp the block between two boards with the spine edge proud by about 3 mm.
Brush on PVA, thin enough to flow, working it into the folds with your finger. Don't flood it. You want glue in the sewing holes, not running down into the pages.
Let it dry, then glue again. Two thin coats beat one thick one every time. The second coat fills whatever the first one pulled away from.
While that second coat is still tacky, lay a strip of mull over the spine. It should extend about 20 mm onto each side of the block. Press it down, rub it with a bone folder, and let it dry.
The mull carries the hinge. Without it, the paste-down does all the work, and it will tear at the joint within a year.
Add headbands now if you're using them. A thin line of PVA at head and tail, headband pressed in, held with a strip of tape until dry.
Measuring the Case: Square and Allowance
This is where my first book died, so we're doing it on paper before anything gets cut.
Measure the text block: height, width, and spine thickness. Say 210 mm tall, 148 mm wide, 20 mm thick, with 2.5 mm board.
The square is how much board sticks out past the pages on three sides. Three mm is standard. It protects the edges, and it's most of what makes a book look like a book.
Board height is text block height plus two squares, so 216 mm. Board width is text block width plus one square at the fore edge, minus the joint at the spine edge.
The joint is the hinge gap, usually 7 to 8 mm. So board width lands at roughly 143 mm in our example.
The spine gap between the boards equals text block thickness plus two board thicknesses plus two joints. That's 20 + 5 + 16, or 41 mm.
Cut two boards at 216 by 143 mm and a spine strip at 216 by 41 mm. Pencil an arrow on the inside of each board pointing to head so you can't flip them later.
Then dry-fit. Lay the boards either side of the spine strip with an 8 mm gap at each joint, set the text block on top, and look at the squares. If they're uneven, fix it now. Paper is forgiving. Board is not.
Covering the Case in Cloth
Cut your cloth with a 15 mm turn-in on all four sides, plus an extra 10 mm everywhere, because cloth creeps when you glue it.
Lay the cloth face down. Center the spine strip, then the boards, using a straightedge and the dry fit you just did. Trace lightly with a pencil.
Glue the spine strip first with PVA, press it down, rub it flat. Then the boards, one at a time, keeping the joint gap clean. Glue the board, not the cloth, or the cloth stretches.
Turn the case over and rub the cloth into the joints with a bone folder. This is the step that makes a hinge look sharp instead of puffy.
Now the corners. Trim the cloth at each corner to within 2 mm of the board corner, at 45 degrees. Fold the long edges in first, then the short edges over them, and press hard.
Corners are the tell. A sloppy corner makes an otherwise good book look homemade in the bad sense. Take the extra five minutes.
Casing In: Paste Down and the Hollow Back
Trim your endpapers to the text block size. One folded sheet at front and back, sewn on with the first and last signature, or tipped on with a 3 mm strip of PVA.
Slide the text block into the case. Check the squares again, all three sides, and check that the block's spine sits inside the case's spine with a small gap.
Now the paste-down. Slide wax paper under the endpaper, brush wheat paste onto the endpaper, and close the cover. Work from the spine outward, smoothing with your palm.
Open the cover, rub the endpaper down with a bone folder, and look for bubbles. Wheat paste gives you thirty seconds to lift and re-lay. PVA gives you five.
Do the back the same way. Then close the book, square it, and put wax paper between the endpaper and the block so nothing glues shut.
Pressing, and How Long It Really Takes
Press the book between two boards with weight on top, and leave it alone for twenty-four hours. Not four. Twenty-four.
This is where people get impatient and ruin a good book. The paste is still moving water into the boards for hours after it feels dry.
No press? Two cutting boards and a stack of cookbooks work fine. Put the weight evenly, not all in the middle.
Working time for one book is about five hours. Calendar time is two or three days, most of it waiting.
Five Failures and What Actually Fixes Them
Warped boards
Boards warp when one face takes more moisture than the other. Glue both sides, or paste a waste sheet on the inside face and let it dry under weight.
Cloth bubbling
Bubbles mean too much glue, or glue that grabbed before you smoothed it. Work smaller areas, use wheat paste for covering, and rub with a folder as you go.
Text block shifted in the case
You cased in before checking the squares. With wheat paste you can still slide it back. With PVA, you're remaking the case.
A case that's too tight
Usually a joint measured too narrow, or board thickness left out of the spine gap. A tight case won't open flat and the hinge will tear. Remake the spine strip.
Pages waving at the fore edge
Grain direction, almost always. If the paper was folded across the grain, no amount of pressing fixes it. Recut the signatures.
What It Costs Against a Store-Bought Hardback
A hardback in a shop runs $28 to $35 now. A book you case bind yourself costs about $10 in materials once your supplies are on the shelf.
That's not the real math though. The real math is that $55 of supplies makes four or five books, so your second and third cost less than a paperback.
And a case-bound book with linen thread, mull, and a hollow back will outlive the glued hardback you'd buy. I have one from 1998 that's still tight.
What you're actually buying is a Saturday. Five hours, a bone folder, and a book with your own pencil marks inside the cover.
Start With Four Signatures
Don't make your first book a gift. Make it ugly on purpose, learn where the joint goes, and keep it on your own shelf.
Then make the second one properly. You'll be surprised how much of this becomes muscle memory after one attempt.
If your corners are lumpy, that's normal. If the case is a millimeter off, nobody will know but you. The book still opens, still holds, still lasts.
And when your kid pulls it off the shelf in fifteen years and asks who made it, you'll have a much better answer than "a store."
