Summer men s shirt collar

Sewing cotton Knit fabric

Professional knit hems tend to favor the strength of a double row of stitches.Ann Steeves

Holding the fabric very taut as you stitch can save restitching later.

Professional knit hems tend to favor the strength of a double row of stitches.

Photo: Ann Steeves

Nowadays, it seems that knits are the fabric mainstay of our lives. Fashionistas and seamsters have embraced the comfort, ease, and wearability that knits afford. But for the beginning (and even not-so-beginning) seamster, there are some techniques that make sewing with knits easier and more enjoyable. Here are a few to get you started.

Use the right needle - The needle you use in a project with knits can make or break the results. Generally speaking, you need a specialized needle to sew knits. There are two types that I use for knits: Ballpoint (also called Jersey) and Stretch. Ballpoint needles are best used for sweater-type and loosely woven knits. They have a rounded point that penetrates the fabric without catching or cutting through the yarns. Stretch needles are perfect for sewing through tightly knitted jersey fabrics with high Lycra content. I use them on all my wool, polyester and rayon jersey garments. For more on choosing the right needle for your project, check out Machine-Needle Know-How, an article from magazine.

Stitch type and length - If you have a straight-stitch-only machine, set your stitch length to a medium (2.5mm-3mm) setting. When sewing knits with a straight stitch, you need to stretch the fabric very slightly (and very gently) as it goes under the presser foot. To do this, apply equal pressure on both sides of the needle by slightly pulling the fabric as shown.

Do not pull the fabric as it goes through the feed dogs: you may risk breaking your needle and damaging your machine if you do.

If you have a zigzag machine, set your stitch length to the narrowest zigzag setting (.5mm on many machines), and your stitch length to between 2.5mm and 3mm. If you have a very thick knit, you may need a longer stitch length. You do not need to stretch the fabric as you sew. The slight zigzag will give you the stretch needed.

Holding the fabric very taut as you stitch can save restitching later.Seam finishes - Knit fabrics, especially jerseys, don't generally ravel, so you can get away without finishing the seams in many cases. If you are fortunate enough to have a serger or overlock machine, you can use that to stitch and finish your seams in one fell swoop. You can also use your serger to finish the raw edges of hems before sewing them in place. I like to do this when working with sweater knits, terrycloth, or any knit that might have a tendency to "shed" slightly at the edges.

About face - Many patterns for knits call for using a facing for necklines and other exposed edges. With many knits, especially very stretchy jerseys, you can often skip the facing entirely. Simply fold under the seam allowance and stitch in place. I have been able to eliminate the facings on most necklines this way. If you have a very curved edge (like an armhole), you should test on a scrap of fabric cut to about the same curvature to see how you like the results.

Shouldering the burden - When making a knit top or dress, I stabilize the shoulder seams to prevent stretching. To do this, I fuse a piece of interfacing to the back shoulder piece or pieces. I prefer to use a 3/4-inch-wide piece of fusible tricot, which is made even with the cut edge of the fabric, but extends slightly beyond the seamline. This adds stability, but is light enough and has enough give to work with most knits. For heavier knits or sweater knits, I sometimes center a selvage of silk organza in the seamline and stitch through all layers. The organza provides a lot of strength to the seam, but adds no bulk.

Hemming - If you examine knit ready-to-wear, you'll notice that most hems are sewn with a double row of stitches on the outside. Manufacturers use a specialized machine, called a coverstitch, to achieve this finish. If you don't have a coverstitch, you can still achieve this look. Most zigzag sewing machines can accommodate a double needle. This needle sews a perfectly spaced double row of stitches on the needle side of the fabric, with a zigzag on the bottom.

This stitch has more stretch than a regular straight stitch, and is perfect for giving you a professional-looking finish. Before stitching your garment, make a test on a scrap of fabric. Double needles may require some adjustments to your needle and bobbin tension to achieve a smooth, flat hem. Mark your hem on the right side of your garment. I like to use tailor's chalk that can easily brush or wash away. Then sew along this marking so your double row of stitches is on the right side.

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