hero image - french seams

How to Sew a French Seam

hero image - french seams

French seams are a way to finish a seam so there are no raw or exposed edges of fabric on the seam. They work great for thin or delicate fabric, or any project where you want both the outward showing and inward showing seams to look good.

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Some people balk at trying them and I think it’s because it feels like you are sewing in reverse. To start a French seam you have to sew a seam on the right side of the fabric, and that just feels wrong. I get it, I do. But if you trust the process, you’ll love how it all turns out.

Here is an example on two pre-cut fabric squares. I’m going to join these together with no exposed seams by using the French seam method. First, place the fabric WRONG sides together.

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Now sew your seam. Your seam allowance will depend on the fabric you are using and the type of project. For ease of explanation I did a ½” seam.

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Next, cut down the excess fabric a bit and then head to your ironing board. Do NOT skip ironing when sewing French seams. As with most sewing projects, ironing can make all the difference.

Iron the seam to one side. Flip the fabric over and iron the seam on the reverse as well.

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Now fold the fabric on the seam you’ve created. I like to iron this too. For good measure, you can pin the fabric in place so it doesn’t move when you sew again.

Take the fabric over to your machine and sew another seam, this time on the wrong side of the fabric. You want to sew a seam that is wide enough to fully enclose the raw seam on the inside portion. I sewed ½” again (remember I had trimmed down my previous raw edge to about ¼”.)

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Voilà! Now your seams are completely encased. Très bien.

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The last and important step is to press once again. Open up your seam and press on the front AND back of your fabric.

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You’ve done it! THAT is a French seam. The applications are endless, just trust the process and don’t worry about starting a seam on the right side of fabric. Happy sewing!

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Charlotte Kaufman is a writer and sewist in Mammoth Lakes, California. She specializes in marine and home interiors and continues to fall more and more in love with quilting. You can follow her at charlottekaufman.com.

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