Scalloped edges are curved, shell-like borders you stitch onto fabric

A scalloped edge is a series of curved bumps sewn along the border of fabric—think of the wavy edge on a seashell. Instead of a straight line, you create a repeating pattern of rounded dips and peaks. You can sew scallops by hand or machine, and they work on everything from pillowcases and napkins to quilt borders and garment hems.

The basic method is the same whether you use a machine or needle: mark the scallop pattern on your fabric, sew along the marked line, trim the excess fabric close to the stitching, and finish the raw edge so it doesn't fray. The curve is what takes practice—getting smooth, even bumps requires a steady hand and the right needle speed if you're using a machine.

Key Takeaways

  • Mark your scallop pattern on fabric using a template, coin, or scallop ruler before you sew so your curves are even.
  • Sew directly on the marked line with a short stitch length (2.0 or smaller on a machine) to reinforce the curve before trimming.
  • Trim the fabric close to the stitching line without cutting the thread, then finish the raw edge with a zigzag stitch or binding to prevent fraying.
  • Hand sewing scallops takes longer but gives you more control over curve depth and spacing, especially on delicate fabrics.

Mark your scallop pattern before you sew

The first step is deciding how large your scallops will be and marking them on the fabric. Scallops typically range from half an inch to two inches across, depending on the project. A small coin (like a quarter or dime) works well for marking small scallops; a larger coin or a drinking glass works for bigger ones.

Place your template (coin, glass, or scallop ruler) along the edge of the fabric and trace around it with a fabric pencil, chalk, or washable marker. Overlap each curve slightly so they connect smoothly. Mark the entire edge you plan to scallop before you start sewing. If you're working on a curved edge like an armhole, mark as you go—the fabric will tell you where the next scallop should sit.

For perfectly even scallops, use a scallop ruler (available at fabric stores) or print a scallop template from a sewing pattern and tape it to your fabric. This removes guesswork and is especially useful if you're scalloping multiple pieces that need to match.

Sew along the marked line with a short stitch length

Set your sewing machine to a stitch length of 2.0 or smaller—this creates a tight, reinforced line that holds the curve in place and prevents the fabric from puckering when you trim. Use a regular presser foot and thread that matches your fabric or a neutral color.

Sew slowly and deliberately along your marked scallop line. The slower you go, the easier it is to follow the curve without wobbling. At the dips between scallops (the valley where two curves meet), slow down even more and pivot the fabric slightly to keep the line smooth. Don't backstitch at the start and end of each scallop—just keep sewing continuously from one scallop to the next.

If you're hand sewing, use a backstitch with thread that matches your fabric. A backstitch is stronger than a running stitch and holds the curve better. Make your stitches small and even—about 1/8 inch apart—and follow the marked line as closely as possible.

Trim the fabric close to the stitching without cutting threads

Once you've sewn the entire scalloped edge, trim the excess fabric away. Use sharp fabric scissors or pinking shears and cut as close to the stitching line as you safely can—usually about 1/8 inch away. Do not cut the thread itself. Work slowly and use short snips rather than long cuts; this gives you more control and reduces the risk of accidentally cutting your stitches.

If you're using pinking shears (scissors with a zigzag blade), they'll automatically create a notched edge that resists fraying. Regular scissors leave a straight edge that will need finishing. Either way, trim all the way around before you move to the next step.

Finish the raw edge to prevent fraying

The raw edge you just created will fray if you don't seal it. The most common finish is a zigzag stitch: set your machine to a medium-width zigzag (about 3.0 width, 2.0 length) and sew along the trimmed edge so the needle catches both the fabric and the air beyond it. This locks the fibers in place.

Another option is bias binding—a strip of fabric folded and sewn over the raw edge. Bias binding is more decorative and works well on projects like quilts or heirloom pieces. You can buy pre-made bias tape at fabric stores or make your own from contrasting fabric. Fold the binding over the scalloped edge and sew it down by hand or machine.

For a simpler finish on lightweight fabrics, you can use fray check (a liquid sealant) painted along the edge. Let it dry completely before handling the fabric. This works best on small projects or delicate fabrics where you don't want the bulk of binding.

Hand sewing scallops for more control

If you prefer hand sewing or are working with delicate fabric that might pucker under a machine foot, you can sew scallops entirely by hand. Mark your pattern the same way, then use a backstitch with a needle and thread. Make your stitches small and consistent—about 1/8 inch—and keep the line smooth through each curve.

Hand sewing takes longer but gives you precise control over stitch placement and curve depth. It's also quieter and gentler on fragile fabrics like silk or linen. Once you've finished the backstitch, trim and finish the edge the same way you would for machine-sewn scallops.

Common mistakes and how to avoid them

Uneven scallops usually happen when you mark freehand without a template. Use a coin or ruler every time—it takes an extra five minutes and saves you from ripping out stitches later. Puckering along the curve means your stitch length is too long or you're sewing too fast. Slow down and use a 2.0 stitch length or smaller.

Cutting into your stitches when you trim is the most frustrating mistake. Use sharp scissors, work slowly, and trim in short snips rather than long cuts. If you do accidentally cut a stitch, you can hand-sew a few stitches to close the gap before you finish the edge.

Fraying after you finish happens when you skip the zigzag or binding step. Even if your project looks done, that raw edge will unravel in the wash. Always finish the edge, even on small projects.

Frequently Asked Questions

Can I use a scallop presser foot instead of marking the fabric?

Some machines have specialty presser feet that guide scallops, but they work best on straight edges and require practice. Marking by hand gives you more control and works on any edge shape. If you have a scallop foot, test it on scrap fabric first before using it on your actual project.

What's the difference between scallops and a lettuce edge?

A lettuce edge is a rolled, wavy finish created with a special presser foot or by hand-rolling the fabric as you sew. Scallops are distinct bumps you mark and sew before trimming. Lettuce edges are faster but less defined; scallops are more structured and decorative.

How deep should my scallops be?

Scallop depth depends on the size of your template and the look you want. Small scallops (half inch) are subtle; larger ones (one to two inches) are bold and decorative. Start with a quarter-sized coin for a balanced look, then adjust based on your project.

Can I sew scallops on a curved edge like an armhole?

Yes, but mark as you go rather than marking the entire edge at once. The fabric will curve naturally, and you'll adjust your template placement to follow that curve. Sew slowly and pivot frequently to keep the line smooth through the curves of both the scallop and the garment.

Do I need special thread for scalloped edges?

Regular all-purpose thread works fine. Use a color that matches your fabric or a neutral shade. If you want the stitching to show as a design detail, use a contrasting thread—this is common on quilts and decorative projects.