⚡ Quick Answer: How to Sew a Scalloped Hem
To sew a scalloped hem, create a curved paper template, cut a fabric facing strip the same length as your hem, trace the scallop shapes onto the interfaced facing, pin it to your garment right sides together, sew along the traced curves at 1.4mm stitch length, clip V-points to within 1–2mm of stitching, then turn right side out and press with steam. Total time: 1–2 hours for an average garment hem.
Learning how to sew a scalloped hem is one of the most rewarding skills you can add to your garment-making toolkit. In my 15 years of hands-on sewing, this is the finishing technique I return to most for blouses, skirts, children’s dresses, collar edges, and home decor projects — because nothing signals careful craftsmanship quite like a row of perfectly shaped, crisp scallops. This complete tutorial is suitable for intermediate sewers and confident beginners, and it covers every step: drafting your template, preparing the facing with interfacing, sewing the curves at the right stitch length, clipping correctly, and finishing so your scallops hold their shape through repeated washing.
What Is a Scalloped Hem?
A scalloped hem features a repeating series of outward-facing, rounded curves — shaped like connected half-circles — running along the bottom edge of a garment or fabric piece. The name comes from the resemblance to scallop shells stacked side by side. Unlike a straight hem finished with a fold or serger, a scalloped hem is built using a separate fabric facing that carries the pre-marked curved shapes. After sewing and trimming, that facing is turned to the inside so only the decorative curves show on the outside of the finished garment.
What Exactly Is a Scalloped Hem in Sewing?
A scalloped hem is a decorative sewing technique where the lower edge of a garment features a repeating row of outward-facing half-circle curves instead of a straight finished edge. The curved shapes are created by sewing an interfaced fabric facing — a separate strip of matching fabric fused with lightweight woven interfacing — to the garment along a pre-traced scallop template, then trimming the seam allowance, clipping the V-points between curves to within 1–2mm of the stitching, and turning the facing right side out so the clean curves sit on the outside. The technique works equally well on garment hems, collars, cuffs, pocket edges, and home decor items like table runners and pillow covers.
What Do You Need to Sew a Scalloped Hem?
Gather these materials before you begin. Having everything ready keeps the process smooth and prevents stopping mid-step:
| Materials | Tools |
|---|---|
| Your garment | Sewing machine |
| Matching fabric for facing | Scissors and pinking shears |
| Lightweight woven interfacing | Paper for template |
| Thread that matches your fabric | Fabric marker or Frixion pen |
| Pins | Measuring tape |
| Something round (like washi tape roll) | Iron |
One material worth specifying: use lightweight woven interfacing — such as Pellon SF101 Shape-Flex, rated at approximately 1.3 oz/yd² — rather than knit interfacing. Woven interfacing adds firm structure without stretch, which is essential for keeping scallop curves crisp and consistent after repeated machine washing. Knit interfacing has too much give, and the scalloped edge will gradually lose its defined shape over time. For the fabric marker, I use a Frixion pen specifically — the marks disappear completely when pressed with a hot iron, leaving no residue on the finished facing.
How Do You Create a Scalloped Hem Template?
The template controls every scallop’s size, spacing, and consistency. A precise paper template is what separates a professional-looking scalloped hem from one that looks uneven or rushed. Here is exactly how I make mine:
- Measure your total hem length. For this tutorial, I’m working with a 100-inch hem on a gathered skirt.
- Divide the hem into 8 equal sections. For a 100-inch hem, each template section is 12.5 inches long. For a 64-inch hem, each section would be 8 inches. The 8-section division is reliable for most garment hems.
- Cut a paper strip that is 12.5 inches long (your section length) and as wide as your desired scallop depth: 2.5 inches for garments, 3 to 3.5 inches for home decor items like table runners.
- Mark a ¼-inch seam allowance along one long edge of the paper strip. This is the edge that will align with the raw hem edge when you sew.
- Choose a round tracing object. A roll of washi tape (approximately 1.5 inches in diameter) creates small, delicate scallops. A large thread spool (approximately 2 inches in diameter) creates wider, bolder scallops. The diameter of your object determines the width of each finished scallop.
- Trace connected half-circles along the bottom edge of your paper template, starting and ending at the same height. Make sure the first and last scallop are complete — not cut off at the edge of the paper.
- Cut carefully along the curved scallop line to complete your template. You will use this same template 8 times to mark the entire facing.
How Do You Prepare a Facing for a Scalloped Hem?
The facing is the separate fabric strip that becomes the visible scalloped edge of the finished hem. Preparing it correctly — especially the interfacing step — is what determines whether your scallops hold their crisp shape through washing or gradually go limp after the first laundering.
Cut a strip of fabric the same length as your garment hem and 2.5 to 3.5 inches wide, depending on scallop depth. For 1.5-inch scallops on a garment, a 2.5-inch wide facing is sufficient. For deeper 2.5 to 3-inch scallops on home decor items, use a 3.5-inch wide strip. Choose a lightweight woven fabric that matches your garment — the same fabric works well if it isn’t too heavy.
Sew the short ends of the facing strip together to create a continuous loop that matches the circumference of your garment hem. Then apply Pellon SF101 woven interfacing — or equivalent — to the entire wrong side of the facing loop. Fuse using a medium-hot iron: press firmly for 10–15 seconds per section, lifting and repositioning rather than sliding the iron so the interfacing doesn’t shift before it bonds. Let each section cool for 5 seconds before moving to the next. Skipping this interfacing step is the single most common reason scalloped hems look limp after the first wash.
How Do You Mark Scallops onto Fabric Accurately?
Place your paper template along the bottom edge of the interfaced facing, wrong side up. Using a Frixion pen, trace the scallop shapes onto the facing. I prefer the Frixion pen over a traditional fabric marker for this step because the ink disappears completely under a hot iron — so any marks that remain visible after sewing vanish the moment you press the finished hem.
Reposition the template, aligning it precisely where the previous section ended, and continue tracing until scallops cover the entire facing. After marking, check that all V-points between scallops reach the same depth — shallow or inconsistent V-points will result in puckered points when the hem is turned. Hold the marked facing up to a light source to check consistency before you cut or sew anything.
How Do You Sew a Scalloped Hem Step by Step?
Pin your interfaced facing to your garment with right sides together. The scalloped tracing on the facing should point toward the garment body — downward, into the garment — not toward the hem edge. The straight long edge of the facing aligns with the raw hem edge of your garment.
Baste the facing to the garment using a long stitch (3.5mm) run through the center of the facing width. Basting stabilizes the layers during curved sewing and significantly reduces curve shifting — a common problem when sewing scallops without a basting pass first.
Set your sewing machine to a stitch length of 1.4mm for standard garment fabrics — cotton, linen, chambray, poplin. This shorter stitch length produces noticeably smoother curves and creates a stronger seam at the V-points between scallops, where stress is most concentrated during wear and washing. If you have one, attach a transparent presser foot so you can track exactly where your needle is relative to the marked scallop line.
Sew along the traced scallop lines, moving slowly. At each V-point between scallops, leave the needle down, lift the presser foot, rotate the fabric slightly, lower the foot, and sew 2–3 reinforcement stitches straight across the very lowest point of the V before pivoting to continue the next curve. These 2–3 tiny straight stitches at the V-point — rather than trying to pivot mid-curve — are what prevent the hem from opening at its most vulnerable spot after repeated washing.
Remove the basting stitches once all scallops are sewn.
How Do You Trim and Clip a Scalloped Hem?
Trimming and clipping is the step that most directly determines whether your finished scallops look crisp and professional or lumpy and puckered. In Mithu’s testing at Craftsing, every scalloped hem that came out poorly could be traced back to one of three clipping errors: not clipping deeply enough at the V-points, clipping through a stitch, or skipping the outer curve notches entirely. Take your time on every point.
- Trim the outer curves with pinking shears, cutting to within 3–4mm of the stitching line. The zigzag edge from the pinking shears reduces bulk while naturally preventing fraying — no additional finishing needed on the seam allowance curves.
- Clip the V-points with sharp embroidery scissors. Cut straight into each V-point, getting to within 1–2mm of the stitching. This is the most critical step in the entire process — if you don’t clip deeply enough, the V-point will bunch up and pull the adjacent curves out of shape. Use fine-tipped embroidery scissors rather than dressmaking shears for precision.
- Notch the outer curve seam allowance. Cut 2–3 small triangular notches, evenly spaced, around each scallop’s outer curve — not at the V-point. These notches allow the convex outer surface of each scallop to spread and lie flat when turned right side out.
How Do You Turn and Finish a Scalloped Hem?
Turn the facing right side out by gently pulling each scallop and point through the opening. Use a point turner or the blunt end of a chopstick to push out the tip of each V-point from the inside — work slowly, since rushing this step is the most common cause of torn stitching at the points. If a V-point doesn’t turn fully, do not force it; instead, trim 0.5mm more from that point with embroidery scissors before trying again.
Press the finished scallops with a hot iron using steam. I press each scallop individually: hold the iron over one scallop for 5 seconds, then move to the next. Press from the facing side first, then flip the garment and press from the right side. This double-press sets the curves more firmly and produces a crisper edge than a single pass over the whole hem at once.
For a more defined, professional finish, topstitch 2mm from the scalloped edge using matching thread and a 2.0mm stitch length. Topstitching is optional but adds a polished look that holds the facing in place and reinforces the scallop shape — particularly effective on linen, cotton, and chambray garments.
To complete the hem, roll the top raw edge of the facing under by ¼ inch and secure it to the inside of the garment with hand slip stitching, or machine-stitch it with an edge stitch 1–2mm from the folded edge. The hem is now fully finished on both sides.
Where Do Scalloped Hems Work Best on Garments and Home Decor?
Scalloped hems add a handmade touch that elevates garments from nice to genuinely memorable. Based on 15 years of sewing and testing, here are the placements that work best:
- Blouse hems and sleeve edges
- Skirt and dress hems
- Pocket edges and collar details
- Table runners and place mat edges
- Curtain hems and cushion cover borders
Children’s dresses with scalloped collar or hem details are particularly popular right now — the heirloom sewing aesthetic has seen a strong revival in the US market. For home decor, scallops on table linens and curtain hems communicate handmade quality in a way a straight hem simply cannot. The technique scales from small, delicate garment scallops (1-inch wide) to bold home decor scallops (3 inches wide) by simply adjusting the tracing object diameter and facing width.
Common Mistakes When Sewing a Scalloped Hem
What Happens If You Don’t Clip the V-Points Deeply Enough?
Not clipping the V-points to within 1–2mm of the stitching is the single most common reason a scalloped hem puckers and bunches after turning. The V-point between two scallops is a concave angle — it physically cannot turn right side out without that clip releasing the seam allowance. Use sharp embroidery scissors, aim for 1mm from the stitching at every single point, and check each V before turning the whole hem at once. Dull scissors require more pressure and dramatically increase the risk of accidentally clipping through a stitch.
Why Does Skipping Interfacing Ruin a Scalloped Hem?
Without interfacing on the facing, a scalloped hem loses its crisp, defined shape after the very first machine wash. The facing fabric stretches during sewing and pressing, and uninterfaced curves gradually relax into a wavy, undefined edge that no amount of re-pressing fully recovers. Always apply lightweight woven interfacing — Pellon SF101 or equivalent, approximately 1.3 oz/yd² — to the full wrong side of the facing before marking or sewing any scallop shapes.
Does the Wrong Stitch Length Ruin Scalloped Hem Curves?
A stitch length above 2.0mm produces angular-looking curves on a scalloped hem because each stitch segment is long enough to create a noticeable flat section. The shorter the stitch, the smoother the curve appears when turned right side out. On most garment fabrics, 1.4mm is the correct setting. On heavier fabrics — canvas or medium-weight denim — use 1.6mm for stitch integrity without sacrificing too much curve smoothness.
Why Does Uneven Scallop Spacing Look Unprofessional?
Scallops that vary in width or depth are the clearest visual sign a scalloped hem was sewn without a template, and they are nearly impossible to correct once the stitching is done. Always create a paper template and test-fit it against the full hem length before marking any fabric. Template sections must divide evenly into the total hem — for a 100-inch hem with 8 repeats, each section must be exactly 12.5 inches. Measure twice before marking, and re-check that each template placement starts exactly where the previous one ended.
Why Does Pressing Matter So Much for Scalloped Hems?
Insufficient pressing is why many finished scalloped hems look flat, wavy, or undefined rather than sharp and dimensional. Press at three distinct stages: after fusing the interfacing, immediately after clipping and before turning, and again after turning — holding the iron still with steam for 5 seconds over each individual scallop. Pressing all three stages takes an extra 10–15 minutes total but produces a noticeably more professional finished result than a single end-stage press.
✅ Key Takeaways: How to Sew a Scalloped Hem
- Divide your total hem length into 8 equal sections and create a paper template before marking any fabric
- Apply Pellon SF101 woven interfacing (approx. 1.3 oz/yd²) to the facing before sewing — this step is non-negotiable for wash-resistant scallops
- Set stitch length to 1.4mm for the smoothest curves on standard garment fabrics
- Clip every V-point to within 1–2mm of the stitching using sharp embroidery scissors — this single step makes or breaks the finished result
- Press at three stages: after interfacing, after clipping, and after turning — 5 seconds per scallop with steam at each stage
- Topstitch 2mm from the edge for a crisper, more defined finish — especially effective on linen and cotton
Frequently Asked Questions About Scalloped Hems
How to make a scalloped hem?
Making a scalloped hem involves four key stages: creating a paper template scaled to your hem length, tracing the scallop curves onto an interfaced fabric facing, sewing the facing to your garment along the traced lines at 1.4mm stitch length, then clipping, turning, and pressing the finished curves. The most critical steps are clipping the V-points to within 1–2mm of the stitching and pressing with steam for 5 seconds per scallop at three different stages to set the curves permanently.
How to make a scalloped edge?
Creating a scalloped edge starts with good planning. Draw evenly spaced half-circles on paper. Transfer this pattern to your fabric. Sew carefully around each curve. The secret is in the clipping and pressing. Make small cuts into the <a href="https://craftsing.com/hidden-sewing-gauge-ruler-features/" title="Unlock 7 Hidden Sewing Gauge Ruler Features for Effortless Precision”>seam allowance. This helps the curves lay flat when turned.
What is a scalloped edge?
A scalloped edge is a decorative finish that looks like a series of connected half-circles. Think of the pattern that waves make on a beach. It’s a classic design detail often seen on dress hems, collars, and sleeves. This feminine touch can make simple garments look more elegant.
What is scalloping in sewing?
Scalloping is a sewing technique that creates curved, wave-like edges on fabric. It’s a way to add visual interest to straight edges. The process involves cutting and sewing curved shapes, then turning and pressing them to create a smooth, finished look. It’s popular in both clothing and home decor.
How do you make a curved hem pattern?
To make a curved hem pattern, start with paper and a round object. Draw a straight line equal to one-eighth of your total hem length — for a 100-inch hem, that’s a 12.5-inch line. Use your round object to trace connected half-circles along the bottom edge, making sure each scallop is the same size. Cut around the curved line to complete your template. Test the template against your full hem length before marking fabric to confirm the sections divide evenly.
Can I sew a scalloped hem by hand?
Yes, scalloped hems can be sewn by hand using a small backstitch along the traced scallop lines. Hand sewing is the preferred approach for delicate fabrics like silk, chiffon, or organza, where machine presser foot pressure can distort the curves. Use a size 10 or 12 hand sewing needle with strong matching thread, and clip the V-points exactly as you would after machine sewing — the 1–2mm clip-depth requirement is identical regardless of sewing method.
What stitch length should I use for sewing scalloped hems?
The best stitch length for sewing a scalloped hem is 1.4mm on standard garment fabrics including cotton, linen, and chambray. This shorter stitch produces noticeably smoother curves and creates a stronger seam at the V-points between scallops, where stress is most concentrated during wear. On heavier fabrics like canvas or medium-weight denim, use 1.6mm for stitch integrity without sacrificing too much curve smoothness.
Why does my scalloped hem pucker when I turn it?
Scalloped hem puckering after turning is almost always caused by not clipping the V-points deeply enough — you need to cut to within 1–2mm of the stitching at every single point. A second cause is a stitch length above 2.0mm, which creates excess tension in the curved seam when turned. A third common cause is skipping interfacing on the facing, which allows the fabric to stretch unevenly during sewing and results in inconsistent, wavering curve shapes.
What fabrics work best for a scalloped hem?
The best fabrics for scalloped hems are lightweight to medium-weight wovens: quilting cotton, linen, chambray, and poplin all produce clean curves that hold their shape well after pressing. Avoid stretchy knits for your first scalloped hem project — knit fabrics shift during sewing and distort the curves. Very heavy fabrics like denim and canvas create excess bulk at the V-points that is difficult to clip away cleanly.
Do I need interfacing for a scalloped hem?
Interfacing is essential for a scalloped hem that holds its shape through repeated washing. Without it, the facing fabric stretches during sewing and the scallops gradually lose their crisp, defined edges after the first machine wash. Use lightweight woven interfacing — Pellon SF101 Shape-Flex or equivalent, rated at approximately 1.3 oz/yd² — fused to the full wrong side of the facing strip before marking or sewing any scallop shapes.
Start Sewing Your First Scalloped Hem Today
A scalloped hem takes more time than a straight hem, but the finished result is genuinely impossible to replicate with a purchased garment. The technique gets faster with every project — by the third scalloped hem, the template drafting, marking, and clipping stages feel completely natural. Start with a cotton blouse hem or a child’s dress where scallop size and fabric weight are forgiving, and you will have a finished garment that shows craftsmanship in every single curve.
For your first project, keep your scallops between 1 and 1.5 inches wide and use quilting cotton for the garment and the facing — it clips cleanly, turns easily, and presses beautifully. Once you have one successful scalloped hem under your belt, try applying the technique to a full fall outfit for a cohesive, handmade look.