How to Attach Two Knitted Pieces Together: Stitch Them with Ease

HomeTechniquesHow to Attach Two Knitted Pieces Together: Stitch Them with Ease

To attach two knitted pieces together, use a mattress stitch or whip stitch with a darning needle to invisibly join the pieces. This will create a seamless and professional-looking finish.

Do you have two knitted pieces that need to be attached? Attaching them together doesn’t have to be a challenge. With the right supplies and some patience, you can easily use a mattress stitch or whip stitch with a darning needle to invisibly join two knitted pieces together.

In this article, we’ll give you all the information and tips you need to get started.

Let’s get sewing!

Gather the Supplies You Need

Get your project finished quickly and easily with the right supplies – a darning needle and some thread are all you need!

Before starting, choose yarn that’s the same weight, texture, color, and fiber content as what was used in your knitting project. This will ensure that the stitch looks seamless when it’s completed. You should also make sure to match tension tips so that the pieces fit together correctly.

If necessary, adjust your knitting tension by using larger or smaller needles before beginning the stitching process. When selecting thread for attaching knitted pieces together with a mattress stitch or whip stitch, use high-quality thread in a similar color as your yarn.

Consider using heavy-duty polyester or cotton thread to avoid breakage during stitching. For best results, double up on strands of thread to make it easier to see where you’re stitching and for added strength when joining knitted pieces together.

To ensure an invisible join between two knit pieces, be sure the edges of each piece line up evenly with one another before beginning to stitch them together. If needed, stretch out each piece slightly around its edges prior to sewing them together so they have an even seam allowance from edge-to-edge on both sides of fabric after joining.

Once you have gathered all of your supplies and lined up both knitted pieces correctly along their edges, you’re ready to begin attaching them together!

Understand the Mattress Stitch

To master the art of seam-stitching, get to know the mattress stitch – it’s your new best friend!

The mattress stitch is an excellent way to invisibly connect two pieces of knitting together. It’s a great choice for stockinette stitch as well as ribbing, and allows you to control the tension so that your seam looks neat and even.

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To start mastering this technique, here are three things you should keep in mind:

  1. Gauge swatching is essential with any sewing project, but especially important when using the mattress stitch. Make sure to knit up a gauge swatch before attempting the join so that you have an accurate idea of your tension and gauge.
  2. Get comfortable with tension control; practice makes perfect with this skill! You’ll want to make sure that when working from one side of your seam to another, you’re keeping each loop nice and tight on either side so that it looks consistent throughout.
  3. Be mindful of where your needle is pointing; if it’s not lined up correctly then there will be gaps between stitches or unevenness in the work after sewing together both sides of the fabric.

The mattress stitch can seem intimidating at first but with a little practice and patience, you’ll soon be stitching away like a pro!

Master the Whip Stitch

Mastering the whip stitch is a great way to attach your knitted pieces invisibly and with finesse – giving you professional results! The whip stitch is a great alternative to the mattress stitch, as it allows for more control over the tension of the join. Understanding tension and counting stitches are key when using this technique. To ensure an invisible join, use a thread that blends in with your yarn, or one that provides contrast.

Pattern Tension Stitches
Insert darning needle Light 1-3
Loop Moderate 4-8
Pull through Firm 9+

To begin, insert your darning needle into the edge of one side of the fabric you want to join and create a loop. Pull it through until there’s enough slack for you to work with and then decide how tight or loose you would like your seam to be. If you’re looking for light tension, only pull through 1-3 stitches on each side. For moderate tension pull on 4-8 stitches and if you’re looking for firm tension pull through 9 or more stitches on each side before pulling the yarn back out again. Once you have achieved your desired level of tension, repeat these steps along both pieces of fabric until they are fully joined together!

Choosing the right thread is important when trying to achieve an invisible seam; use a colour that matches or blends in well with your yarn so it doesn’t stand out too much when finished. Alternatively, using a contrasting thread can add texture and visual interest to an otherwise plain piece – making it look unique! Whichever method you choose, remember practice makes perfect so keep practicing until you get results that have no visible seams!

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Choose the Right Thread

Breaking away from the mundane and unifying two unlikely components creates a unique bond that can’t be achieved any other way – just like choosing the right thread for your project.

When it comes to selecting what type of thread to use, the weight of the yarn is important as it will determine how durable your knitted pieces are when stitched together. You should also consider matching colors so that your seam blend in with the surrounding fabric.

If you’re using multiple colors of thread, make sure they all have similar weights so that they create an even tension throughout.

It’s also important to pay attention to care instructions for both your yarn and thread; some threads may require special washing or drying instructions, which can affect their longevity and durability over time. Look for threads composed of natural fibers such as cotton or wool, as these tend to hold up better than synthetic materials like polyester or nylon.

Finally, if you’re looking for extra security when stitching together two pieces of fabric, consider using a hand-dyed embroidery floss or a doubled-stranded waxed linen cord instead – both are strong enough to withstand wear and tear while providing an attractive finish.

Once you’ve chosen the right thread for your project, it’s time to sew your pieces together with a darning needle. Make sure you select one with a sharp point so it easily slides through loops without snagging on them – this will help ensure neat stitches and consistent tension across seams.

Darning needles come in different sizes depending on the thickness of your thread; look for one marked ‘medium’ or ‘fine’ if you’re not sure which size is best suited for your task at hand.

To begin stitching, draw each end of the threaded needle through alternating loops on either side until all edges are joined securely – then tie off with a knot at the end before trimming off any excess length!

With careful selection and precision sewing techniques, you’ll soon be able to join two knitted pieces together seamlessly – creating beautiful results every time!

Sew Pieces Together with a Darning Needle

You can use a darning needle to subtly and securely join your knitted fabrics, giving you beautiful results every time! Darning needles are specially designed for weaving techniques such as the mattress stitch or whip stitch.

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When choosing the right thread for your project, make sure it’s made from the same type of yarn as your knitting. This will ensure that the seam will blend in with the rest of your fabric.

To attach two pieces together using a darning needle, thread both ends of the needle with different lengths of matching yarn. Begin by inserting one end of the needle into one side of the knitted fabric and then bring it through to meet up with its other end on the other side.

Pull tight to secure them together before repeating this process until all pieces have been joined. With practice, you’ll be able to sew knitted pieces together seamlessly, creating beautiful garments or accessories.

Finish and Block the Project

Finishing and blocking your project is an important step to ensure it looks its best; in fact, up to 80% of the quality of a knitted garment can depend on how well you blocked it.

To begin, pin your pieces into shape by using different techniques such as pinning diagonally or along edges. You may also use blocking materials such as foam mats, wires, or stretchy cords for more intricate designs.

After that’s done, use a spray bottle filled with water to wet the project and let it dry overnight. This is essential for creating even tension throughout the knitted fabric and shaping it properly.

Finally, once everything is dry and secure in place, carefully remove all pins and admire your work! Blocking will help open up stitch patterns and make any garment look professional and polished.


You’ve done it! You’ve successfully attached two knitted pieces together, and the result looks great. Congratulations!

By using a mattress stitch or whip stitch with a darning needle, you have invisibly joined these pieces in a way that is both aesthetically pleasing and sturdy.

Now your project can be finished and blocked with confidence. The process of learning this skill may have been difficult at times, but you persevered and now can reap the rewards of your hard work.

Through trial and error, patience and practice, you’ve developed the ability to create something beautiful—a surprisingly powerful metaphor for life itself.

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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