I haven’t seen other sewists using corded buttonholes, so I’m here to share a simple technique that will give you better buttonholes on tricky fabrics! I used this technique on my esme cardigan in my last blog post!
Corded buttonholes can be used for practical reasons as it provides extra stabilization when used with interfacing on fabrics like bouclé, sweater knits, and stretch wovens. It also works great on buttonholes that are extra long. Long buttonholes tend to sag open on some fabric creating the “duck lip” look. Duck lips look just as bad on buttonholes as they do in selfies!
Corded buttonholes can also be used for purely aesthetic reasons too. Regular buttonhole stitching can disappear on thick fabrics, but corded buttonholes can create 3D stitching that looks great on denim, corduroy, suiting, and coating fabrics.
It is essential that you use interfacing appropriate for your fabric. If you are working with a knit fabric, you must use a fusible tricot interfacing so the interfacing stretches with the fabric. For woven fabrics, I prefer to use a woven fusible as opposed to non-woven, but this is more of a personal preference. I recommend using perle (also called pearl) cotton for the cord. It is available in many colors so you can match your thread, and it is heavily twisted and will not separate unlike embroidery floss. I used size 5 DMC brand. Size 5 is about the largest you could use for this application. If you are sewing a corded buttonhole in a thinner fabric and do not want a 3D look, you can use buttonhole twist thread for stability without a difference in appearance.
Here is how I make corded buttonholes on my Bernina. Consult your machine’s manual for for tips using your machine.
1. Mark the buttonhole placement, and apply the interfacing to the wrong side of the fabric according to the manufacturer’s directions.
2. Set up your machine for a buttonhole stitch. Lower the needle of your machine into the fabric, but don’t lower the presser foot yet.
3. Cut about eight inches of cord. Loop the cord over the front middle “toe” of the foot and bring the cord ends under the foot and hold them in your left hand behind the presser foot. The needle will be inbetween the threads. (Some buttonhole feet have a prong in the back for cording. In this case, you would loop the cord over the back prong and hold the ends in front of the presser foot.)
4. Lower the presser foot. Double check that the cord is on either side of the needle. The cord needs to be close to the needle so the cord will be within the zig-zag stitch when the buttonhole is stitched.
6. Pull the loose ends of the cord to get rid of the loop. Thread both the cord ends through a hand sewing needle with a large eye, and insert the needle at the base of the buttonhole pulling the extra cord to the wrong side of the fabric. Tie a knot, and trim the ends. You are done!
Here is a side by side comparison of a corded buttonhole (bottom) and a regular buttonhole (top) on coated cotton canvas fabric.