How to Sew Knit Fabrics on Sewing Machine

How to Sew Knit Fabrics on Regular Sewing Machine

If you want to sew garments from knitted fabrics here you will find thr tips on how to sew stretch and knit fabric with a regular sewing machine.

Knits fabrics become more popular for making children's clothing. Knits are easy to fit and often do not require ironing. These fabrics are ideal sjutable for sewing t-shirts, pants and other clothes for sport and outdoor activities.
The only drawback of knitted fabrics is the inability to sew such fabrics qualitatively on conventional sewing machines. When sewing often there are some defects of stitching which spoil the appearance of the product and the quality of the tailoring.
But don't scared to sew with knit fabrics, these tips will help you sew jersey fabrics without problems on your regular sewing machine.

Three Types of Knit Fabric You Should Know

Interweaving of knitted fabrics

To understand the basic difference between ordinary fabric and knit, look at this scheme with interweaving of knitted fabrics. Knits have loops like knitting by hand or using knitting machine.
This is the main feature that gives stretchability to knitwear and at the same time complicates sewing.

The Most Common Type of Knit is Jersey

Before you start sewing with knits, you need learn a bit about main different types of knit fabric.
The most common type of knit is jersey, which is what most basic T-shirts are made of. Jersey fabric is stretched in four direction well.

Knit Fabric Interlock

There are knits fabric which are stretched only in horizontal direction. Pay attention to these features of knitted fabrics when cutting and sewing clothes. During sewing this fabric along vertical edge the fabric will not stretch. And vice versa, the stitch line laid horizontally will be wavy and ugly.

Rib Knit Fabric

Rib knit is a type of knit fabric is used for sewing cuffs and waistband.

There are different knit fabrics: single knits, double knits, and rib knits. Some look different on each side, some look the same on both sides. There are kind of knit fabrics that stretch a lot. Another kinds of knits stretch a little.
Before sewing examine your knit fabric. Determine in which direction the tissue is stretched more. Make a note of it and cut the pattern considering this.

Special Machines for Sewing Knitted Fabrics

Cover Stitch Machine

Cover Stitch Machine.
The coverstitch machine (flatlock sewing machine) is most used for sewing the clothing made from knit jersey fabrics. Here you find a tutorial how to use the coverstitch machine and some cover stitch machine tips and techniques.
If you need to sew t-shirts or children's clothes from knitted fabrics you need have the serger coverstitch. It is a very useful sewing machine for sewing such fabrics. The serger coverstitch is special sewing machine that is used for attaching hem of t-shirt. The cover stitch machines are used also for flat seaming where the raw edges can be finished in the same operation as forming the seam.

Overlock Sewing Machine

Overlock Sewing Machine.
This type of sewing machines is used to overcast, or sew over and enclose the raw edges of fabric. At the same time a serger can cut the edge of the fabric.
If you want sew many garments you need this overlocker sewing machine. Using a serger you can join seams and finish the edges by trimming off the extra fabric. Serge the edges of fabric and your garment will have a qualitative and professional look.
Overlock also no substitute for sewing knit fabrics. Adjustable differential feed allows sew such fabric with very high quality.
See more here: How To Use An Overlock Sewing Machine.

But since not everyone has such special machines, let's learn how to sew knitted fabrics on regular sewing machine.
Listed below some items that you can buy and will help you enormously when sewing knit jerseys.

Twin Needles are Used for Sewing Knit Fabrics

Twin Needles are Used for Sewing Knit Fabrics

If your sewing machine has zig-zag stitch you can use twin needle. Using double needle help you make extensible double seam. When you use a twin needle, you'll use two spools of thread on the top.
Note: Then you use your zigzag foot while sewing.

How to use a double needle? A twin needle you can insert in the needle bar like a usual needle that is used for your home sewing machine. But it has one difference, it has two needles attached to a single shank.
For sewing with twin needle you must use three threads. Two of them (from coils) you need insert in the eye of a needle and one is used for threading a bobbin. The bobbin thread (with help a shuttle hook) will be catching the threads from both needles at the same time.

Needles for Knits Fabrics

Needles for Knits Fabrics

For successful sewing of garments from knits fabrics you need use special sewing needles. The most commonly used needles have a ballpoint. Such tip of needle does not damage the fibers of the knitted fabric during sewing on sewing machine.
On the package of such needles is the inscription "Jersy", and "Ball point", it means that the needles have a rounded point of the tip.
Note: You can use universal needles but on a stretchy or delicate knit, it's going to create tiny tears in the fabric that will get worse as you wash and wear.

How To Sew Jersey On a Sewing Machine

How To Sew Jersey On a Sewing Machine

Any home lockstitch sewing machine makes a non-stretch stitch. Knitted fabrics on the contrary are strongly stretched, including during sewing them on the sewing machine. As a result, a wavy ugly seam is formed.
To avoid this, it is necessary to sew jersey on special sewing machines that use a differential feed. Differential feed is literally that- it changes the speed of the feed dogs so that they 'feed differently'. More accurately, the back feed dogs stay constant, and the front ones change speed according to how you set the differential feed. Such differential feed have modern models overlocker.

Special types of stitches

To make an ordinary sewing machine able to sew jersey, were invented some special types of stitches.
You can sew knits with one needle, no problem. Ideally, your machine has a stretch stitch. Which one is the stretch stitch? It is the one that looks like an offset zig zag. This stitch goes forward, then back a bit, to create a seam that can stretch with your fabric.
A lot of these stitches are available on computerized sewing machine.

If you don't have a stretch stitch, you can use narrow zig zag stitch. The zig zag will allow your fabric to stretch.
Note: Test it on your fabric scraps to find the best setting to make sure it lays flat.

Elastic Stitching

Elastic Stitching

The elastic stitch (arrow on photo) can be used in 3 ways: mending, sewing elastic or stitching the knit fabrics.
This elastic stitch can be used to joining two pieces knitted fabrics together and it is very effective when sewing any kinds of knitted fabrics. When nylon thread is used, the stitch will not be visible.

Threads for Sewing Knitted Fabrics

Threads for sewing knitted fabrics

For sewing knitted fabrics is used thin, elastic and strong threads. Do not use thick or cotton threads.
Note: For each new knit fabric, it is necessary to adjust the tension of the upper thread. See also: Main types of sewing threads.

How to hem knit fabric with a serger

English isn't my first language, so please excuse any mistakes and help correct them.
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