How To Sew Underwear in Bulk (Without Losing Your Mind or Your Fabric 😅)
Hi, I’m Alyona 👋
If you’ve ever tried to sew your own underwear and ended up tangled in elastic like a trapped octopus — you’re not alone. When I first started, YouTube was basically a desert. No proper tutorials, no helpful voices, just me, a pile of ruined fabric, and a sewing machine plotting against me.
So, after years of trial, error, and a few emotional support cups of tea ☕, I’ve found a way to make underwear in bulk (yes, like a mini factory at home — but with way more fun and better music). I’m going to walk you through five simple steps that’ll save your time, fabric, and sanity.
And if you’re just starting out, please — don’t waste money on paid patterns right away. I’ve got a free pattern you can use to test the waters first. You can grab it right here: Smart Thong Panties Sewing Pattern. Try it, see if underwear sewing is your cup of tea, and then go wild with your fancy lace stash and new patterns.
Let’s roll up our sleeves and get started.
Step 1 – Preparing and Cutting the Fabric ✂️
First things first — print your pattern on A4 paper only. Not “A little bigger, maybe it’ll fit?” Nope. A4. Trust me on this one.
Once printed, place the pattern on your fabric and cut three simple pieces:
- the front
- the back
- and the gusset
That’s it! Just three.
Now here’s my secret sauce — cut many at once. Seriously. When you bulk-cut your fabric, you can place pieces side by side, and somehow (I don’t know how the sewing gods do it), you end up saving fabric. It’s like magic… but with scissors.
Bulk cutting also saves tons of time later because you won’t have to set up again and again. Think of it as meal prepping — but for your sewing table.
Step 2 – Sewing the Crotch Seam 🧵
Now we’re getting into the juicy part. Take your front piece (face up), place the back piece (face down) — so they’re facing each other. Then add your gusset (face down) on top of the back piece.
You’re basically making a fabric sandwich 🥪 — the gusset is your top bread slice.
Pin the crotch seam with your favourite pins or clips (whatever doesn’t stab you mid-project). Since we’re making several pairs, pin them all at once — five in one go, for example.
Now sew those seams. Use an overlocker if you have one, but a regular sewing machine works perfectly fine too. The seam will be hidden inside that neat little sandwich, so no one will ever know your secrets. 😏
Step 3 – Sewing on the Elastic 🎀
Ah, the elastic stage. The moment when beginners either fall in love… or cry quietly into their fabric.
My go-to? Fold-over elastic (FOE) — because it’s the most forgiving, beginner-friendly type. It gives a clean finish, behaves nicely, and doesn’t make you want to throw your machine out the window.
Start by sewing the elastic along the waistline edges of the front and back. Then move on to the leg holes.
✨ Pro tip: When sewing around the leg holes, leave about 2–3 cm of elastic free at both the start and end. This little gap will later become your best friend when adding rings and straps — it gives you wiggle room and prevents frustration (and swearing).
Once your elastic is done, trim the ends neatly so everything looks smooth and tidy — no bits sticking out like rebellious threads.
And voilà — step three done. You’re officially halfway to your underwear empire.
Step 4 – Preparing the Straps 🔗
Now it’s time for the straps — the easiest part of the whole process!
Cut your elastic straps. I always say: cut a little more than you think you’ll need. You can always shorten them later, but if they end up too short… well, unless you’re sewing for a doll, that’s a problem.
You’ll need 10 pieces if you’re sewing five pairs (two per panty). Slide a slider onto each elastic, fold it, and sew the fold near the slider to secure it.
Do them all in one go — because once your machine is set for elastic, you’re flying through it. Switching between settings for each panty is the definition of torture.
Bonus time-saver: stick to one elastic colour for the whole batch. No constant re-threading, no headaches. Just sew, sip your tea, repeat. ☕
When the sliders are in place, add your rings. Pass the elastic through, loop it back through the slider, and sew again with a zigzag stitch. Done and dusted.
If you like visuals (I know I do), there’s also a video tutorial showing this exact process.
Step 5 – Attaching the Straps 💫
We’re in the home stretch!
Take your finished straps and insert the rings into those little 2–3 cm elastic gaps you left earlier on the leg openings. Fold the elastic over the ring, then sew using the same zigzag settings you used for the straps.
Trim any messy edges or extra threads. If you’re feeling brave (and I mean really brave), you can lightly melt the ends with a lighter to prevent fraying. But if fire near delicate fabric makes your heart race — skip it. Safety first 🔥🚫.
And just like that — ta-da! — your five pairs of panties are ready. Mine took under an hour. One hour! Imagine the stockpile you could build if you kept going. Perfect if you’re sewing for a business or planning to open a little underwear boutique one day.
Speaking of which — if you’re curious what it’s really like to turn sewing into a business, check out How To Run Sewing Pattern Business Online – What It’s Really Like Behind the Seams. It’s a fun read — and very real.
Final Thoughts 💖
And there you go — your own mini lingerie production line at home. Bulk sewing isn’t just a time-saver; it’s also a confidence boost. Once you nail the rhythm, you’ll never want to sew one lonely pair again.
If you try this method, let me know how it goes! How many pairs did you make? How long did it take you? I love hearing your sewing victories — and seeing those beautiful makes.
Now go, grab that fabric, and show it who’s boss. 😎
