How to Sew a Knitted Seam: Knit Your Way to Flawless Seams

HomeTechniquesHow to Sew a Knitted Seam: Knit Your Way to Flawless Seams

Sewing knitted sweater pieces together can be a bit intimidating, but with practice, it’s a skill that anyone can learn. To sew pieces together, you’ll need to use a mattress stitch, working through edge stitches with a tapestry needle. This will create a strong and durable seam that will hold up over time.

Sewing a knitted seam has never been easier!

All you need is a tapestry needle, some yarn, and an appropriate stitch.

You don’t even need any special skills or previous experience.

In this article, we’ll take you through the basics of sewing a knitted seam using either mattress stitch or whip stitch.

With just a few simple steps, you’ll be able to master this technique and make perfect seams every time.

So let’s get started!

Gather Supplies

Gather the essential materials you’ll need to complete your project; a tapestry needle and the right kind of stitch will make all the difference!

Start by selecting a thread that’s appropriate for your fabric. This can be easily determined by looking at the thread type, ply, and size on the label. Choose one that best matches your material in both color and thickness.

Once you’ve selected thread, it’s time to pick out a tapestry needle. Look for one with an eye that’s large enough for your thread but small enough so it won’t leave noticeable holes in your fabric.

Now that you have gathered all of the necessary materials, it’s time to move on to learning how to sew a knitted seam.

Before beginning any stitching project, familiarize yourself with different sewing stitches available as each one has its own purpose and technique. Pay attention to which stitch works best with certain fabrics, as this will help you achieve a successful result when creating seams or finishing edges.

An appropriate stitch for knitting projects includes mattress or whipstitch because they provide an invisible seam on both sides of the fabric while avoiding puckering or distortion due to their even tension across both loops of yarn used in knitting.

It’s important to use correct tension when working with knits since too little tension may cause puckered edges whereas too much tension could cause stretched fabric after completing stitching rows or rounds. To achieve just the right amount of tension when using either mattress or whipstitch, practice these stitches first until comfortable before attempting them on actual projects such as sweaters or scarves. Taking some time beforehand will save frustration later!

Now that you have all of the supplies needed and know about basic knit stitches, now’s the opportunity to get started on creating amazing sewn pieces!

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Learn the Basics

To gain a fundamental understanding of the process, you should become familiar with the different stitches that can be employed and the tapestry needle needed to execute them.

Knitting techniques such as mattress stitch and whip stitch are two of the most common for sewing together knitted pieces.

Here are four essential tips to help you learn how to properly sew a knitted seam:

  1. Choose an appropriate stitch pattern for your project.
  2. Measure and mark where stitches should go.
  3. Thread the tapestry needle and tie off one end.
  4. Sew using an even tension and follow a consistent pattern.

When putting it all together, remember that the key is to make sure that each side of the seam lines up evenly and looks neat overall when finished. Taking extra care in this step will ensure you get professional-looking results every time!

To prepare for sewing, begin by gathering all necessary supplies like yarn or thread, scissors, a measuring tape or ruler, pins or clips, and lastly your tapestry needle – now you’re ready to get started!

Prepare the Seam

Now that you’ve got your supplies ready, let’s get the seam prepped – it’s like laying the foundation of a building!

First, you’ll need to trim any excess yarn from the edges of both pieces. This’ll help ensure a neat, even seam and make it easier to sew. Once you’ve trimmed the edges, weave in the ends so they won’t unravel or come undone.

After that, lay out your two pieces with the right sides facing each other and line up all of the edges neatly.

Now comes the fun part – pinning your pieces together! Pinning them’ll hold everything in place as you sew them together. Place pins along each edge, making sure that all of your stitches will line up correctly when you’re finished sewing. You can also use stitch markers if needed for extra security and precision.

Once you’re done pinning your pieces together, check one last time to make sure everything is aligned and in place before moving on to sewing them together with a tapestry needle.

Now that everything is prepped for sewing, it’s time to move on to creating this beautiful knitted piece!

Sew the Seam with a Tapestry Needle

Taking the next step in creating your beautiful piece, grab your tapestry needle and let’s start sewing! Tapestry needles are ideal for this job because they have a blunt end that easily passes between loops without snagging or splitting the yarn.

Choosing the right thread is important; it should match the weight of your yarn and be strong enough to keep its tension. When threading through, you also want to make sure there is no excess slack as this will affect the overall tension control of your seam.

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To help keep everything in place, use a knot at both ends of your stitch line so it won’t unravel when you pull on either side. Start by threading one end of the yarn into the tapestry needle, then take it back through itself to create a basic knot at one end of your seam. Then do the same with the other side before starting to sew. This will ensure that neither side slips out while you are stitching together your knitted pieces.

Now you’re ready to begin sewing! Start by going through each loop from back-to-front on one side of the fabric, then front-to-back on the other side until you reach the end of your stitch line. Be careful not to pull too tightly – this will cause puckering that could ruin all of our hard work so far! As you go along, adjust as needed according to how much slack there is in order to get an even tension throughout.

Once finished, tie off both ends with a double knot – again making sure not to pull too tight – and trim off any extra threads sticking out from either side.

Now we can move onto learning about mattress stitch for those areas where garter stitch seams don’t quite fit in with our design.

Mattress Stitch

You can now move onto mastering the art of mattress stitch, which will give your knitted design a seamless look that’s hard to beat! This stitch is used for side seams and shoulder seams. It’s important to use the same yarn that you have already been using for your project. This will ensure that your seam matches the rest of your work in terms of color, weight and texture.

Advantages Disadvantages
Invisible seam Not as flexible
Flat and neat More time-consuming
Strong seam Requires practice
Easier tension control

To start mattress stitch, you’ll need to attach one end of the yarn at the beginning of the row with a slip knot. You’ll want to keep an even tension throughout so it’s important to make sure you don’t pull too tightly when attaching your yarn. Once you have attached your yarn, begin by taking a small horizontal stitch through both pieces of fabric at once from back to front. Be sure not to pull too tight or else it could affect the overall shape of your garment. Then take another small horizontal stitch on top from front to back in order to complete one single stitch. Continue this process all along the length of both pieces until they are completely joined together!

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Mattress stitching takes some practice but once mastered, it gives a professional finish and is great for adding strength as well as invisibility where desired. With patience and consistency, you can easily achieve an even tension and control with this type of seaming technique – creating beautiful garments like never before! The next step is learning how whip stitching works – giving us yet another way to join two pieces together seamlessly without having any visible stitches between them!

Whip Stitch

The whip stitch is an easy, yet effective way to join two pieces of fabric together without any visible seams – perfect for creating a professional finish! It involves weaving techniques and the placement of stitches in order to create a secure bond between two separate pieces.

This method is often used when sewing knitted fabrics, as it provides more flexibility and strength than other methods. Here are four key steps to sew a successful whip stitch:

  1. Thread your needle with yarn or thread that matches the knit fabric you’re working with.
  2. Start by inserting the needle through one piece of fabric from top to bottom, then into the other piece from bottom to top so that they overlap slightly.
  3. Pull the yarn or thread through until there is about an inch of slack left on either side of the point where you inserted your needle.
  4. Make another loop in reverse direction and repeat these steps across the seam line until both pieces are securely joined together!

Whip stitching is perfect for joining two sections of knitting together seamlessly, such as sleeve caps or shoulder seams on garments, as well as for applying decorative edging around blankets or scarves. With this technique, you can make sure that your finished project looks neat and professional every time!


You’ve successfully sewn a knitted seam! You now have the skills and knowledge to confidently tackle any project that requires a knitted seam.

With practice, patience, and persistence you can perfect your technique and become an expert sewer. Remember: use the right supplies and stitch for each job, take your time with each step, and pay attention to the details of each stitch.

Before long, you’ll be stitching seams like they’re second nature!

Katherine Pearce
Katherine Pearce
Katherine Pearce is a knitting enthusiast and the founder of With a deep passion for the craft, Katherine aims to make knitting accessible to everyone, regardless of their skill level. Through, she provides online tutorials and resources to help others discover the joys of knitting and develop their skills.

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