Unraveling the Mystery: A Step-by-Step Guide on How to Hem a Knit Sweater

AvatarByJill Nammar Hemming

Have you ever found the perfect knit sweater, only to realize it’s a few inches too long for your liking? Perhaps you’ve tried tucking it in or rolling up the sleeves, but nothing quite gives you the fit you desire. Fear not, as we have the solution for you – hemming a knit sweater! While hemming can seem intimidating, especially with delicate knits, with a little guidance and practice, you’ll have a perfectly tailored sweater in no time. In this article, we’ll provide step-by-step instructions on how to hem a knit sweater and achieve the perfect fit every time. So grab your needles and let’s get started!

Understanding Knit Sweaters

Knit sweaters are a popular clothing item that is loved for its warmth, comfort, and versatility. They come in various styles, such as pullovers, cardigans, and turtlenecks, and can be made from different materials like wool, cotton, or synthetic fibers. However, one common challenge with knit sweaters is their tendency to unravel or stretch out of shape when cut or hemmed incorrectly. This can lead to frustration and disappointment for those attempting to alter or customize their sweater’s length. Therefore, it is essential to have a proper understanding of knit sweaters before attempting any alterations.

Firstly, it is crucial to know that there are several types of knit fabrics used in making sweaters. They include jersey knit, ribbed knit, cable knit, and the popular sweater-knit fabric. Each type has its unique qualities and requires different techniques when hemming. For instance, jersey knits are known for their stretchiness and drape while ribbed knits are characterized by their ribbed texture and vertical stretch. Therefore, understanding the type of knit fabric used in your sweater will guide you on the appropriate hemming method.

Another important aspect to consider when hemming a knit sweater is its structure. Most people tend to overlook this factor and end up with unsatisfactory results. There are two main structures of knit sweaters – flat-knitted and circular-knitted. Flat-knitted garments consist of two separate pieces joined together at the sides while circular-knitted garments do not have any seams as they are made from a continuous loop of yarn. This difference affects how you approach hemming as one requires cutting while the other does not.

Preparing Your Materials

Now that we have established the importance of understanding your knit sweater let us move on to preparing the necessary materials before hemming. The most crucial item for this project is, of course, a sewing machine. When choosing a sewing machine, it is best to go for one with a stretch stitch function. This will help prevent the threads from snapping when the fabric stretches.

Next, you will need suitable needles and thread for your knit fabric. For fine to medium weight knits, use ballpoint needles as they have rounded tips that slide between the knitted loops rather than piercing through them. This helps to avoid damaging the knit fabric while sewing. For thicker knits, use a stretch needle as it can easily penetrate through multiple layers of fabric.

When it comes to choosing the right thread for hemming knit sweaters, polyester or poly-blend threads are ideal as they are strong and have a slight stretch that can accommodate the fabric’s movement. Avoid using cotton threads as they do not have any elasticity and can break easily.

Lastly, do not forget to get your hands on some iron-on hem tape or fabric glue if you plan on using those methods instead of sewing.

Types of Hemming Techniques

There are several ways to hem a knit sweater depending on its structure and fabric type. Here are three popular methods:

Straight Stitch Hem
This method is best suited for flat-knitted sweaters made from jersey or sweater-knit fabrics. It involves stitching along the edge of the fabric with a straight stitch and then folding it over once or twice (depending on the desired length) before stitching again. This method creates a clean and simple look without any visible hem edges.
Folded Hem
For this technique, you will need to fold over the raw edge of your knit sweater twice and secure it with either a straight stitch or zigzag stitch. It works well for finer knits as it creates a neater finish than just turning under once.
Twin Needle Hem
One of the most professional-looking hemming methods for knit sweaters is the twin needle hem. It uses two needles simultaneously to create two rows of parallel stitches on the fabric’s right side, while a zigzag stitch secures the raw edge underneath. This method is ideal for thicker knits like ribbed and cable-knit.

The Hemming Process

Now that you have your materials prepared, and you know which technique works best for your sweater let us dive into the actual hemming process.

Firstly, it is essential to transfer all your measurements onto the sweater using fabric chalk or tailor’s tacks. This will ensure accuracy when cutting or folding your hem.

For straight stitch and folded hems, fold over the raw edge according to your markings and secure with pins or clips. Then, using a stretch stitch, sew along the edge of the folded fabric. Make sure not to pull on the fabric as you sew as this can cause stretching and puckering.

For twin needle hemming, use pins or clips to keep your folded edge in place before sewing with a twin needle. It is crucial to keep an even tension on both threads and gently guide the fabric through without pulling on it.

If you are using iron-on hem

Understanding Knit Sweaters

Knit sweaters are a staple in any wardrobe, providing both warmth and style. They come in a variety of styles and materials, but one thing remains constant: they always need to be hemmed.

But what exactly is a knit sweater? Simply put, it is a type of garment that is made by interlacing yarn or thread using knitting needles or machines. The process creates an intricate pattern of interconnected loops, resulting in a fabric that is stretchy and comfortable to wear.

Now that you have a basic understanding of what knit sweaters are, let’s delve into the details of how to hem one.

The Importance of Hemming

Hemming may seem like a tedious or unnecessary step when it comes to knitting sweaters, but it serves several important purposes.

Firstly, hemming helps to keep the edges of the sweater neat and tidy. The initial cast-on row can often look messy and uneven, especially if you are new to knitting. Hemming smooths out these imperfections, giving your sweater a polished finish.

Secondly, hemming ensures that the edges do not unravel or fray over time. Knit sweaters tend to experience more wear and tear due to the stretchy nature of the fabric. A good hem will prevent your sweater from unraveling at the bottom edge or around the neckline.

Lastly, hemming allows for alterations and adjustments to the length of your sweater if needed. While you may have followed a pattern or your own measurements when knitting, sometimes things don’t turn out exactly as planned. A hem gives you some wiggle room to make any necessary changes without compromising the integrity of your sweater.

Materials Needed for Hemming

Before we get into the actual process of hemming, let’s gather all the materials you will need:

– A knit sweater (of course!)
– Sewing needles – preferably ones with blunt tips to avoid snagging the yarn
– Thread that matches the color of your sweater
– Scissors
– Pins
– Measuring tape or ruler

Now that you have all your materials, let’s get started on hemming your knit sweater.

The Hemming Process

1. Measure and Mark: Start by measuring the desired length for your sweater and adding an extra inch for the hem. Using pins, mark this length all around the edge of your sweater.

2. Cut: Using a pair of sharp scissors, carefully cut along the marked line. Be sure to leave that extra inch for hemming.

3. Fold and Pin: Take the extra inch of fabric and fold it inwards towards the wrong side of the sweater. Use pins to secure the fold in place.

4. Prepare Your Needle and Thread: Thread your needle with a long piece of thread and knot one end. Double up the thread for added strength when sewing.

5. Stitch Along Folded Edge: Starting at one end of your sweater, begin stitching along the folded edge using a basic running stitch. Ensure that your stitches are close together for a strong hem.

6. Finish It Off: Once you reach back to where you started, tie off your thread with a knot and trim off any excess.

7. Secure Loose Ends: To prevent any loose stitches from unraveling, weave them into the fabric using a tapestry needle or tucking them under existing stitches.

8. Try It On: Give yourself a pat on the back because you just successfully hemmed your first knit sweater! Try it on and make any final adjustments if needed.

Tips for a Professional Looking Hem

– Choose Quality Materials: For beginner knitters, it is recommended to start with non-stretchy yarns like cotton or wool blends as they are easier to work with. Avoid yarns that have a tendency to unravel or fray.

– Practice Makes Perfect: As with any skill, the more you practice, the better you will become at hemming knit sweaters. Don’t get discouraged if it doesn’t turn out perfectly the first time – keep practicing!

– Be Patient: Hemming a knit sweater can be a time-consuming process, especially for larger or more intricate designs. Take your time and don’t rush through the steps to ensure a smooth and even hem.

To DIY or Not to DIY?

The decision to hem your own knit sweater ultimately depends on your comfort level and skill with sewing and knitting. If you are new to either of these crafts, it may be best to leave it to a professional seamstress or tailor.

However, if you are feeling confident and up for the challenge, go ahead and give it a try! With proper materials and technique, you can achieve a professional looking hem that will make your knit sweater look even more polished and well-made.

Hemming a knit sweater may seem like a daunting task at first, but with the right materials, patience, and practice, anyone can do it. Not only does hemming give

Q: What materials do I need to hem a knit sweater?
A: To hem a knit sweater, you will need a sewing machine, sewing needles, thread that matches the color of your sweater, fabric scissors, pins, and a fabric marking tool.

Q: How do I prepare my sweater for hemming?
A: Begin by washing and drying your sweater according to the care instructions provided. This will prevent any shrinkage from occurring after hemming. Then, turn your sweater inside out and iron the hemline to make it easier to work with.

Q: Can I use a regular sewing machine to hem a knit sweater?
A: Yes, you can use a regular sewing machine as long as it has the ability to make stretch stitches. If you do not have this feature on your machine, you can use a zigzag stitch or a knit stitch which will provide enough stretch for your knit fabric.

Q: How should I measure the length of my sweater for the hem?
A: The best way to measure is by trying on the sweater and folding it up to where you want the new hemline to be. Make sure it is even all around and then measure from the new fold to the bottom of your old hemline.

Q: How do I prevent my knit fabric from stretching while hemming?
A: Place pins around the edge of your new hemline at regular intervals. This will help keep your knit fabric in place while sewing and prevent it from stretching.

Q: What is the best stitch to use when hemming a knit sweater?
A: The best stitch for hemming knits is a twin needle or double needle stitch. It creates two parallel lines of stitching that are stretchy and will move with your knit fabric without breaking. Be sure to adjust your tension settings accordingly for a clean and professional finish.

In conclusion, hemming a knit sweater may seem like a daunting task, but it can be easily mastered with the right techniques and tools. From selecting the appropriate thread and needle to using stretchy stitches and stabilizers, these tips can help achieve a professional-looking hem on any knit garment.

One key takeaway from this topic is the importance of understanding the nature of knit fabric and how it behaves differently from other fabrics. This knowledge can greatly impact the success of hemming a knit sweater. It is also crucial to have patience and take your time when working on delicate knits, as rushing can lead to mistakes that are difficult to fix.

Another valuable insight is the significance of using proper tools such as ballpoint needles and stretchy threads. These specialized materials are designed specifically for knit fabrics and can make a significant difference in the final result. Additionally, incorporating stabilizers while sewing can prevent stretching and puckering, resulting in a more polished finish.

Furthermore, learning different hemming techniques such as using a double-fold hem or utilizing a coverstitch machine can give more options for achieving professional-looking hems on knits. With practice and experimentation, one can find the perfect method that works best for their particular knit sweater.

In today’s fast-paced fashion industry, being able to alter

Author Profile

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Jill Nammar
My name is Jill but everyone calls me Jilly. I design original cross stitch patterns inspired by vintage French and flowers. Roses are my muse.
I hope you have a cozy time stitching my patterns. Put the kettle on, relax and create a heartwarming piece of hand-embroidered art. Personalize your home and turn up the soulful charm with soulful stitchery.

My goal is to provide you with pretty patterns that promote peaceful stitching. My wish is for you to discover the gentle beauty of hand-embroidery.My patterns have been featured around the web and in Homespun Magazine and Boston Magazine. I find my bliss in cross stitch.

From 2024, I have embarked on a new venture—writing an informative blog on the “Embroidery and Cross-Stitch” niche. This blog is an extension of my passion, where I share detailed posts and respond to queries related to embroidery and cross-stitching.

The blog covers a wide range of topics from beginner tips, pattern creation, historical insights, and the therapeutic benefits of stitching. My goal is to build a community where enthusiasts can learn, share, and grow in their embroidery skills, ensuring everyone can find their own bliss in cross-stitch just as I did.

Thank you to all my customers and readers who have supported Sew French. Your kind emails, photos of completed patterns, and continual encouragement fuel my dedication to this beautiful craft. Join me in stitching a world of beauty and peace, one pattern at a time.