Curves have a reputation in quilting.
For some quilters, the minute a pattern includes curved piecing, it goes straight into the maybe someday pile.
But here's the secret: curves aren't nearly as scary as they look.
They do require a slightly different approach than sewing straight seams, but with accurate cutting, a little patience, and a few simple tricks, curved quilt blocks can become a really fun way to add movement and personality to your quilts.
Why Is Curved Piecing Different?
When you're sewing two straight pieces of fabric together, everything naturally wants to line up.
Curves don't behave quite that nicely.
You're typically joining a convex curve — the piece that curves outward — with a concave curve that curves inward. Those edges don't look like they should fit together when they're lying flat.
But they do.
The trick is learning how to ease the two curves together without stretching the fabric or creating puckers.
Tip #1: Accurate Cutting Matters
Curved piecing starts before you ever sit down at your sewing machine.
Because curved pieces need to fit together precisely, accurate cutting makes the entire process easier.
If your pattern includes templates, take your time using them. Acrylic templates and smaller rotary cutters can also make navigating curves easier.
A tiny cutting error can turn into a much bigger headache when you start matching your pieces.
Tip #2: Be Gentle With Your Fabric
Curved edges often include fabric cut along the bias, which means those edges can stretch more easily than straight-grain fabric.
That stretch is one of the biggest reasons curved blocks can end up distorted.
Try not to pull or tug on your pieces while cutting, pinning, sewing, or pressing.
Think guide, not pull.
Tip #3: Find and Match the Center
This simple step can make curved piecing dramatically easier.
Fold or mark both curved pieces to identify the center point of each curve.
Match those centers first.
Then match the ends.
Once those three points are aligned, you can work your way around the rest of the curve.
Instead of trying to wrestle two strange-looking pieces together all at once, you've created several smaller sections to manage.
Much easier.
Tip #4: Pins Are Your Friends
You may eventually become comfortable sewing curves with very few pins — or even without them.
But you don't get bonus quilting points for making things harder on yourself.
When you're learning, pin the center and ends first and add more pins between them as needed.
The goal is to distribute the fabric evenly around the curve without stretching it.
If pins aren't your favorite, washable fabric glue or glue basting can also help keep curved pieces in place before sewing.
Tip #5: Slow Down
This is not the seam to race through.
Sew slowly and guide the fabric a little at a time. Keep an eye on the fabric directly in front of the presser foot rather than worrying about the entire curve at once.
A stiletto can also be useful for guiding the fabric close to the needle without putting your fingers in the way.
If you see a tiny fold developing, stop with the needle down, lift the presser foot if necessary, smooth the fabric, and continue.
Tip #6: Keep the Bottom Layer Flat
As you sew, concentrate on keeping the bottom piece flat against your sewing surface.
Guide the upper piece along the curved edge rather than trying to force both layers into position.
The fabric may look a little strange away from the actual seam — that's okay. What matters is keeping the fabric smooth where the needle is stitching.
Tip #7: Don't Stretch While Pressing
You made it through the curve! Don't accidentally distort it at the ironing board.
Press rather than aggressively moving the iron back and forth.
Because curved seams can contain bias edges, too much movement or steam can stretch your block out of shape.
Always check your pattern's pressing instructions, too. Depending on the block, you may be instructed to press the seam toward one side or press it open.
Tip #8: Practice Before Using Your Favorite Fabric
If you're new to curved piecing, make a practice block.
Seriously.
Grab some scraps and sew the curve a couple of times before cutting into that gorgeous fabric you've been saving.
You'll quickly get a feel for how the two pieces fit together and how much guidance your particular curve needs.
And remember: not every curve is the same. A large, gentle curve will behave differently than a small, tight one.
What If My Curved Quilt Block Has Puckers?
First: don't panic.
Small puckers often happen because the fabric wasn't distributed evenly or one of the curved edges stretched during sewing.
If the pucker is significant, removing a small section of stitches and resewing that area may be easier than trying to press it into submission.
And sometimes the answer really is to grab the seam ripper and try again.
We promise — even experienced quilters know their seam rippers very well.
Curves Open Up a Whole New World of Quilting
Learning curved piecing gives you access to an entirely different collection of quilt patterns and designs.
Drunkard's Path blocks, circles, waves, arches, modern geometric quilts and countless contemporary patterns all use curves to create movement that straight-line piecing simply can't duplicate.
So if you've been avoiding a quilt pattern because you saw curves in it, this might be your sign to give it a try.
Start slowly. Cut accurately. Match your centers. Use as many pins as you need.
And remember: quilting is supposed to be fun.
Be Sew Creative Tip
If you're new to curved piecing, start with a practice block before cutting into your favorite fabric. Use a few fabric scraps to sew a gentle curve and get comfortable matching the center points, pinning the pieces, and guiding the fabric slowly under the needle. A little practice can make a big difference when you're ready to tackle your actual quilt project.
Inspired to Try Curved Piecing?
Curved piecing opens the door to so many beautiful quilt designs, from classic Drunkard's Path blocks to modern arches, circles, and flowing geometric layouts. With the right tools and a little practice, curves can become a fun and rewarding part of your quilting journey.
Be Sew Creative carries quilting tools, patterns, and supplies to help you build your skills and enjoy the process. If you're ready to try curved piecing, explore our shop for helpful notions, rulers, templates, and inspiration for your next project.
Be Sew Creative Tip
New to curved piecing? Start with a few practice blocks using fabric scraps. Try sewing a gentle curve first, taking time to match the centers and guide the fabric without stretching. A little practice can make a big difference when you're ready to work with your favorite quilting fabrics!
Frequently Asked Questions About Curved Piecing
Is curved piecing difficult?
Curved piecing requires a different technique than straight seams, but it becomes much easier with practice. Accurate cutting and careful handling make the biggest difference.
Should I pin curves before sewing?
Beginners often benefit from pinning the center, ends, and several points between them. More experienced quilters may prefer fewer pins or glue basting.
Why is my curved quilt block puckering?
Puckers can happen when the curved edges aren't distributed evenly, when fabric gets caught underneath the seam, or when a bias edge stretches during handling or sewing.
Should I use steam when pressing curved quilt blocks?
Use caution. Bias edges can stretch, and excessive steam or aggressive ironing can distort a curved block. Press gently and follow the pressing instructions included with your pattern.
What quilt patterns use curved piecing?
Curves appear in many traditional and modern quilt designs, including Drunkard's Path, Apple Core, circles, arches, waves and contemporary geometric quilt patterns.