How to Sew Cloth Napkins
Cloth napkins are quick to make, cheap to run and endlessly reusable, which makes them a perfect first project for anyone learning to sew straight lines. Mitered corners turn four plain squares into something you would happily give as a gift.
Materials
- 1 yard of cotton or linen, 44 inches wide
- Matching thread
- Spray starch (optional)
- Ribbon for a gift tie (optional)
Tools
- Rotary cutter and ruler
- Cutting mat
- Sewing machine
- Iron
- Pins
Steps
- 01
Choose the size
An 18 inch square is the standard dinner napkin, while 16 inches suits lunch and 20 inches gives a generous restaurant look. Pick one size and cut every napkin the same.
- 02
Cut the squares
Cut each napkin 2 inches larger than the finished size, so an 18 inch napkin starts as a 20 inch square. That extra inch on every side becomes the double-fold hem.
- 03
Press a narrow fold
On all four sides, fold the raw edge under by 1/2 inch and press. Then fold under 1/2 inch again and press, so no raw edge is visible anywhere on the napkin.
- 04
Crease the corners
Open out the folds at one corner and press a diagonal crease where the two fold lines cross. Refold the corner so the two hemmed edges meet along that diagonal.
- 05
Stitch the miter
Stitch along the diagonal crease from one fold to the other, then trim the corner seam to 1/4 inch. Turn the corner right side out and press it into a neat point.
- 06
Topstitch all round
Sew close to the inner fold along all four sides, turning each corner with the needle down. Press the finished napkin flat and repeat for the rest of the set.
What the double-fold hem and the miter actually do
A double-fold hem is two folds, not one, and that is the whole point. The first 1/2 inch fold buries the raw edge, and the second 1/2 inch fold rolls that first fold underneath, so what sits on the table is two layers of folded cloth with the cut edge locked inside. A single fold would leave a raw edge exposed on the wrong side of the napkin, and it would fray a little more with every wash. Stitching close to the inner fold is what converts those two loose layers into one firm ribbon of cloth that can take a hot wash, a tumble dryer and years of wiping.
Pressing between steps is not cosmetic. The crease you set with the iron becomes the track the machine follows. If you try to fold 1/2 inch by eye down at the needle, the hem drifts wider and narrower as you sew and the topstitch line wanders with it. Press the fold, let it cool for a few seconds, then sew: a fold pressed while the cloth is still hot will spring back as it cools, and you lose the line you just made.
The miter is a bulk-removal device. If you simply folded and stitched each side in turn, every corner would carry four layers of hem stacked on top of each other, the needle would deflect, the stitch would skip, and the point would look like a lump. The diagonal tuck removes exactly the fabric that would otherwise pile up there, and the diagonal seam you sew from one fold to the other becomes the anchor that holds the two hemmed legs together. Trimming that seam to 1/4 inch is what lets the corner turn into a crisp point instead of a bump: leave it longer and you can feel the bulk under the iron, trim it closer and the point frays open.
One more structural note that the steps assume but do not spell out: cut every square on the straight grain. A napkin cut even slightly off-grain hangs crooked and washes into a twisted, wonky square, and no amount of pressing will bring the four edges back parallel to each other.
Mistakes to watch for, and how to fix them
A wavy, rippled edge is the most common failure and it almost always traces back to skipping the prewash. Unshrunk cotton contracts in the first hot wash while the stitching does not, so a hem that looked flat on the ironing board puckers into a ruffle the first time it comes out of the dryer. If it has already happened, wash the napkin again, press it while damp with the hem stretched flat, and accept a slightly smaller square. It works because the cloth has now done all the shrinking it was ever going to do.
The second failure is a hem that changes width as it goes around. That comes from folding by eye instead of by measurement, and it shows up most obviously where the topstitch line drifts away from the inner fold halfway along a side. Fix it before it happens: press the first 1/2 inch fold against a ruler, or mark the 1/2 inch with tailor's chalk or a pin every few inches and fold to the marks. Then, at the machine, guide the fabric rather than pulling it. Pulling stretches the edge slightly, and a stretched edge sewn down stays stretched.
Corners fail in one of two directions: bulky or blown out. A bulky corner means the diagonal seam was trimmed too long; re-trim it to 1/4 inch, then press with steam and shape the point while it is still warm. A blown-out point, with a hole or a frayed tip, means the seam was trimmed too close to the stitches, and there is no repair that hides it. Unpick the topstitching back to that corner, resew the diagonal a fraction further in, and re-trim.
When the machine skips or the thread bunches as you topstitch across a corner, the corner is simply too thick for the needle at that speed. Stop with the needle down, turn the hand wheel through the mitered section, and the rest of the side will stitch normally. This is the real reason the instructions say needle down at each turn: lifting the presser foot frees the fabric to shift, and a corner that shifts loses its alignment.
Choosing fabric, thread and tools
The 1 yard of 44 inch fabric in the materials list can be cotton or linen, but the two behave differently. Cotton, especially a quilting-weight cotton, presses into a crisp flat fold, stays square and needs very little encouragement. Linen brings texture and a slight sheen that makes a plain square look expensive, but it frays faster, creases into hard lines, and wants steam rather than dry heat when you press it. A cotton-linen blend splits the difference and is the easiest of the three for a beginner, because the fold behaves like cotton and the surface reads like linen.
Weight matters more than fiber. Anything lighter than a shirting, such as voile or lawn, will let the hem curl at the corners no matter how carefully you miter, and anything heavier than a mid-weight canvas makes even a trimmed miter feel knobbly under the fingers. For prints, remember that you are cutting four identical squares: a directional print, with stripes, a border or an obvious up and down, will show any square that went down the wrong way, so lay all the squares out and check the orientation before the first cut.
The rotary cutter, ruler and mat are listed together for a reason. They cut a 20 inch square in one pass without lifting the fabric, so the four sides stay genuinely straight and every napkin in the set finishes the same size. Shears work, but lifting the cloth to cut lets the layers shift, and you spend the difference trimming the squares back to square. The optional spray starch earns its place on the first napkin too: a light pass holds the 1/2 inch fold closed so the topstitch does not catch the inner layer.
Matching thread disappears into the hem and makes the result look bought rather than homemade; if you want the stitching to read as a design feature, that is a deliberate choice covered below. Use a universal needle suited to the fabric weight, an 80/12 for quilting-weight cotton, and start the set with a fresh one. A dull needle is the usual cause of skipped stitches at the thick mitered corners, and it is the cheapest thing on this list to replace.
Variations and skill-level options
Hem width is the easiest thing to change, and it is also the one variation that forces you to recalculate the cut size. The numbers in this project assume a 1/2 inch double fold, which eats 1 inch per side, which is why an 18 inch napkin starts from a 20 inch square. Press a 1 inch double fold instead, for a heavier, more restaurant-like edge on linen, and each side eats 2 inches, so the same 18 inch napkin has to start from a 22 inch square. Go the other way and a 1/4 inch double fold eats only 1/2 inch per side, so a 19 inch square finishes at 18 inches, with a lighter and more delicate border.
If the miter is the part that worries you, there are two honest alternatives. The first is to skip it and let the double-fold hems overlap at each corner; you end up with four layers there, which is thick and slow to stitch but perfectly serviceable, and a first square that goes slightly wrong is still a working napkin. The second is to bind the edges with double-fold bias tape or hem tape: no measuring and no mitering, but the finished edge reads sportier and more casual than the crisp stitched hem shown here.
For a different look with no new skill, change the thread rather than the construction. A contrasting topstitch, in a colour lifted from the print or a warm cream against natural linen, turns a purely functional line of stitching into a border, and it also lets you see exactly where the hem sits while you sew. Embroidering or stitching a single initial in one corner is the classic gift upgrade and pairs naturally with the ribbon already on the materials list.
The advanced version is a hand-rolled hem on a fine linen: a hem barely wider than a hair, stitched with tiny, almost invisible stitches. It produces a far lighter napkin than a double-fold hem and is the traditional finish on really fine table linen, but it is slow and unforgiving of an off-grain cut, so square the fabric meticulously first. Sizes can also be mixed within one set: 16 inch lunch napkins and 18 inch dinner napkins cut from the same fabric look deliberate when they are stacked together.
Finishing, pressing and care
The final press is what makes a homemade napkin look shop-bought. Press the whole square on the wrong side first, then turn it over and press the right side around the hem, sliding the iron rather than pushing it so the mitered points do not distort. Let each napkin cool completely flat before you fold it: a fold pressed in while the cloth is still warm relaxes back out, and the crease you thought you had set will be gone by morning.
The spray starch marked optional in the materials list earns its place here. A light pass along the hemmed edges holds the miters crisp through a whole dinner, and it stiffens the topstitch enough that the line looks straighter than it is. Skip it for everyday napkins: un-starched cotton is softer on the lap, and leaving it out is one less step when you are making the whole set at once.
Wash the finished napkins the way you washed the yardage before cutting: a warm machine wash with like colours, a tumble dry, then a press. That is the entire reason the prewash matters so much on this project. Because the cloth has already shrunk, the first wash after sewing changes nothing except the creases. Line drying gives a crisper, stiffer napkin and a tumble dry gives a softer one, so choose by preference. The one thing to keep away from linen is bleach, which weakens the fiber over time.
Stored flat in a stack or rolled, a set like this lasts for years. The part that wears out first is the topstitching, not the fabric. If a line of stitching breaks, the double-fold hem still encloses the raw edge, so nothing unravels and you can simply re-stitch over the old line with matching thread. And if the napkins are a gift, the ribbon from the materials list is the entire wrapping: roll the set, tie it once, and let the four mitered corners do the rest.
Frequently asked questions
- Do I really need to prewash the fabric before cutting?
- Yes, and skipping it is the single most common reason a first set comes out with wavy edges. The prewash tip is not optional advice: cotton straight off the bolt has not shrunk yet, so the first wash after you sew makes the cloth contract while the stitching does not, and the hem ruffles. Wash and dry the yard the same way you plan to wash the finished napkins, press it flat, and only then cut. A 1 yard piece of 44 inch cotton is small enough to go through a home machine by itself.
- How do I keep the hem exactly 1/2 inch wide all the way around?
- Press rather than eyeball. Fold the raw edge under 1/2 inch and press that line along the whole side before you fold and press it a second time, because the first pressed line is what the second fold follows. If it still wanders, measure the 1/2 inch with a ruler and mark it with tailor's chalk or a pin every few inches, then use the inner fold as your guide for the topstitch. At the machine, guide the fabric instead of pulling it and let the feed dogs move it; pulling stretches the edge, and the hem gets wider as you go.
- Can I use linen or a printed cotton instead of plain cotton?
- Both work with the same construction and the same 1/2 inch double fold; what changes is the feel and the care. Linen gives you texture and a slight sheen that lifts a plain napkin, but it frays faster than cotton, creases hard and presses best with steam, so trim the mitered corner cleanly to 1/4 inch and expect to iron it. A printed cotton is the easiest choice for a first set because the print hides a slightly wandering topstitch line, but you are cutting identical 20 inch squares, so lay them all out and check that any directional print faces the same way before you cut.
- Can I skip the mitered corner and just fold the hem like normal?
- You can, and it will still be a usable napkin. The cost is bulk: without the diagonal tuck, each corner carries four layers of folded hem, which the needle has to punch through, so expect skipped stitches and a slightly lumpy point. If you would rather avoid the technique entirely, finish the four sides with double-fold bias tape instead, which is faster and needs no measuring, though the edge looks more casual than the stitched hem in this project. If you do want the miter, practice the diagonal on one corner of scrap first: it is only four corners over the whole set, and the second one is always neater than the first.