Tutorial: How to Sew Together Knitted Pieces

Tutorial: How to Sew Together Knitted Pieces

Seaming knitted pieces is an essential step in the process of finishing a knit project. Whether you are making a sweater, a scarf, or any other knitted item that requires multiple sections to be joined together, properly seamed seams are crucial to ensure a polished and professional-looking final result.

Seaming may seem daunting, especially for beginners, but with some practice and the right techniques, it can become a straightforward and even enjoyable part of the knitting process. This step-by-step guide will walk you through the process of seaming your knitted pieces, providing tips and tricks along the way.

Before you begin, make sure you have the necessary tools: a blunt-tipped yarn needle and some spare yarn in the same color as your project. These tools will allow you to stitch the pieces together neatly and securely without leaving any gaps or loose ends.

Remember, practice makes perfect, so don’t be discouraged if your first seamed project doesn’t turn out exactly as you hoped. With time and experience, you will develop your own seaming style and find what works best for you. So let’s get started on mastering the art of seaming knitted pieces!

Preparing Your Knitted Pieces

Preparing Your Knitted Pieces

Before you begin seaming your knitted pieces together, there are a few steps you should take to prepare them:

  • Block your knitted pieces: Blocking your knitted pieces helps to even out the stitches and give them a more professional finish. To block your pieces, simply wet them in lukewarm water, squeeze out the excess water, and lay them flat to dry. Make sure to follow the specific blocking instructions for your yarn type.
  • Weave in loose ends: If you have any loose ends or yarn tails from changing colors or joining new yarn, now is the time to weave them in. Use a tapestry needle to thread the yarn through several nearby stitches, being careful to avoid distorting the fabric.
  • Prepare your seaming yarn: Choose a yarn that matches the color and weight of your knitted pieces for seaming. Cut a long length of yarn, about three times the width of your pieces, to ensure you have enough length for seaming.
  • Mark your seam lines: Use stitch markers or contrasting pieces of yarn to mark the areas where you will be seaming. This will help you align the edges accurately and maintain an even seam.

By following these steps to prepare your knitted pieces, you’ll be ready to start seaming them together and create a beautiful finished project.

Choosing the Right Seaming Technique

When it comes to seaming knitted pieces, there are several techniques you can use depending on the aesthetic you want to achieve and the type of project you’re working on. Here are some common seaming techniques:

  • Mattress Stitch: This is a popular seaming technique for joining stockinette stitch pieces. It creates an invisible seam that blends seamlessly with the rest of the knitting.
  • Backstitch: The backstitch method creates a strong, firm seam. It works well for joining pieces that have a lot of structure or texture, such as cables or ribbing.
  • Whipstitch: Whipstitching is a simple and quick seaming technique. It’s commonly used for joining pieces with a visible seam, like when making stuffed toys or decorative items.
  • Grafting: Grafting, also known as the Kitchener stitch, is a technique used to join live stitches together. It’s commonly used for toe-up socks or seamless garments.

Choosing the right seaming technique depends on the appearance you want to achieve and the type of project you’re working on. Consider the stitch pattern, the structure of the fabric, and the overall design to determine which technique will work best.

Tips for a Professional-Looking Seam

Seaming is an important step when it comes to finishing your knitted project. By following these tips, you can achieve a professional-looking seam.

  1. Use the same yarn: When seaming knitted pieces together, it is important to use the same yarn that you used for knitting. This ensures a seamless blend and a consistent look.
  2. Block your pieces before seaming: Blocking your knitted pieces before seaming can help even out the tension and make the seaming process easier. It also helps to ensure that your finished project will have a smooth and professional appearance.
  3. Match the stitch pattern: Pay attention to the stitch pattern on each piece and match it as closely as possible when seaming. This will help create an invisible seam that blends in with the rest of the project.
  4. Pin your pieces together: Before you start seaming, pin your knitted pieces together to hold them in place. This will help ensure that your seam stays straight and aligned during the process.
  5. Start in the center: When seaming, it can be helpful to start in the center of your project and work your way out. This allows you to evenly distribute the tension and creates a neater seam.
  6. Use a mattress stitch: The mattress stitch is a popular seaming technique that creates an invisible seam. It involves weaving the yarn through the stitches using a needle, creating a smooth and neat finish.
  7. Be patient: Seaming can be a time-consuming process, but it is worth taking your time to ensure a professional result. Be patient and take breaks if needed to avoid rushing and potential mistakes.

By following these tips, you can achieve a professional-looking seam that adds to the overall quality and appearance of your knitted project. Taking the time to seam carefully and accurately will be well worth the effort in the end.

Gathering the Necessary Tools

Before you can begin seaming your knitted pieces, you’ll need to gather a few essential tools. Having the right tools on hand will make the process much easier and more efficient.

  • Tapestry Needle: A tapestry needle, also known as a yarn needle or a darning needle, is an essential tool for seaming knitted pieces. It has a large eye and a blunt tip, making it easy to weave the yarn through the stitches.
  • Scissors: You’ll need a pair of sharp scissors to cut the yarn at the end of your seams.
  • Measuring Tape: It’s important to measure your pieces accurately before seaming them together. A flexible measuring tape is ideal for this purpose.
  • Pins or Stitch Markers: Pins or stitch markers can be helpful for holding the pieces in place while you seam them together. They can prevent the pieces from shifting or stretching during the seaming process.
  • Blocking Tools: Depending on the type of project and yarn you’re using, you may need blocking tools such as blocking mats, pins, or a steam iron to reshape and smooth your knitted pieces before seaming.

By gathering these essential tools, you’ll be well-prepared to begin seaming your knitted pieces. Having the right tools will help you achieve a professional-looking finish and make the process more enjoyable overall.

Starting the Seam

To start the seam, you will need a tapestry needle and a length of yarn that matches the color of your knitted pieces. Thread the needle with the yarn, leaving a long tail at the end for weaving in later.

Begin by aligning the edges of the two knitted pieces that you are seaming together. You can use stitch markers or safety pins to hold the pieces in place if needed.

Starting from the bottom edge, insert the needle into the bottom loop of the first stitch on the edge of one piece. Then, insert the needle into the corresponding bottom loop of the first stitch on the edge of the other piece. Pull the needle through, leaving a small loop of yarn.

Repeat this process by inserting the needle into the next pair of stitches, going from one piece to the other. Make sure to insert the needle under both loops of each stitch to create a secure seam.

Continue seaming the edges together using a mattress stitch or a whip stitch, depending on the desired finish. Make sure to pull the yarn tight enough to create a neat and even seam.

As you work, periodically check that the seam is lining up evenly and that you are maintaining the same tension throughout. Adjust the stitches if necessary.

Once you have reached the end of the seam, secure the yarn by weaving it through the stitches on the wrong side of the fabric. Trim any excess yarn.

Check the seam to ensure it is secure and lies flat. If needed, steam or block the knitted pieces to help the seam lay flat and blend in with the rest of the fabric.

Repeat this process for any additional seams you need to make to complete your project.

Seaming the Sides

Seaming the sides of your knitted pieces is an important step in assembling your project. It helps create a clean and professional finish. Here is a step-by-step guide on how to seam the sides:

  1. Prepare your materials: Before you begin seaming, make sure you have the following materials ready: your knitted pieces, a tapestry needle, and matching yarn.
  2. Lay out your pieces: Lay your knitted pieces flat with the right sides facing up. Make sure the edges of each piece are aligned evenly.
  3. Start with a slip stitch: Take your tapestry needle and thread it with the matching yarn. Insert the needle under the edge stitch of one of the pieces, then bring it through to the right side. This creates a slip stitch. Repeat this step along the entire length of the seam, going in and out of the edge stitches on both pieces.
  4. Secure the slip stitches: Once you have completed the slip stitches, go back to the beginning and pull the yarn tight. This will secure the slip stitches in place and create a strong seam.
  5. Weave in the ends: After you have secured the slip stitches, weave in the ends of the yarn by passing the needle through the stitches on the wrong side of the fabric. Trim any excess yarn.
  6. Repeat on the other side: Once you have finished seaming one side, repeat the same steps to seam the other side of your knitted pieces.
  7. Check your seam: After you have completed seaming both sides, check your seam to ensure it is neat and even. If you notice any areas that need adjustment, go back and make the necessary corrections.

Following these steps will help you achieve a professional-looking seam on the sides of your knitted pieces. Take your time and be patient, as seaming can be a meticulous process. With practice, you will become more confident in your seaming skills.

Seaming the Shoulders

Seaming the shoulders is an important step in finishing your knitted project, as it joins the front and back pieces together to form the shoulder seams. Follow these steps to seam the shoulders of your knitted pieces:

  1. Lay your knitted front and back pieces with the right side facing up on a flat surface. Make sure the shoulders are aligned and any shaping matches.
  2. Thread a tapestry needle with a yarn that matches the color of your knitted pieces. Leave a long tail before cutting the yarn.
  3. Starting from the edge, insert the needle under the first stitch of the front piece and then under the corresponding stitch of the back piece. Pull the yarn through, leaving a small loop.
  4. Continue seaming along the shoulder, inserting the needle under the next stitch of each piece and pulling the yarn through. Make sure to keep the tension even as you go.
  5. Once you reach the end of the shoulder seam, secure the yarn by weaving it back through a few stitches. Trim any excess yarn.
  6. Repeat the seaming process for the other shoulder.

After seaming the shoulders, you can continue with other finishing techniques such as seaming the sides or adding any desired embellishments. Seaming the shoulders is an essential step in creating a polished and professional-looking knitted garment.

Finishing Touches and Blocking

Once you have completed seaming your knitted pieces together, there are a few finishing touches you can add to improve the appearance and fit of your garment. Additionally, blocking your knitted project can help shape it and give it a professional finish. Here are some steps to follow:

  1. Weave in loose ends: Use a tapestry needle to weave in any loose ends of yarn from where you joined the pieces together. This will help prevent the ends from unraveling and give your project a neater finish.
  2. Trim excess yarn: If there are any long tails of yarn left from seaming, trim them to about 1/4 inch. Be careful not to cut through the seam itself!
  3. Steam or press seams: Using a steam iron or a damp cloth and a regular iron, gently press the seams to flatten them. This helps the seams lay flat and gives them a professional finish.
  4. Secure edges: If the edges of your knitted pieces are curling, you can use a crochet hook or a sewing needle to sew a row of single crochet stitches or a whipstitch along the edge. This will help prevent further rolling and give your project a clean edge.
  5. Blocking: Blocking is the process of shaping your knitted project to the desired measurements and allowing the stitches to relax and even out. Fill a basin or sink with lukewarm water and a gentle wool wash or mild detergent. Submerge your knitted project and gently squeeze the water through the fabric. Do not wring or twist the garment. Gently squeeze out excess water and lay the project flat on a clean towel. Reshape the garment to the desired measurements, smoothing out any wrinkles or curling edges. Allow the project to air dry completely before removing the pins or blocking wires.
  6. Finishing touches: Once your project is dry, you can add any final touches, such as sewing on buttons, attaching a collar or neckline, or adding a decorative border.

Following these steps will help give your knitted project a professional finish and make it ready to wear or gift. Don’t forget to take your time and enjoy the process!


What is the purpose of seaming knitted pieces?

The purpose of seaming knitted pieces is to join them together to create a finished garment or project. This technique is often used in knitting to join individual panels or sections, such as the front and back of a sweater or the pieces of a patchwork blanket.

What tools do I need to seam knitted pieces?

To seam knitted pieces, you will need a yarn needle or tapestry needle and a length of yarn in the same color as your knitted project. The needle should have a large eye to accommodate the yarn, and a dull point to avoid splitting the yarn or catching the fibers of the knitting. You may also find a pair of scissors useful for trimming any excess yarn.

What are the different methods of seaming knitted pieces?

There are several methods of seaming knitted pieces, including the mattress stitch, the whipstitch, and the backstitch. The mattress stitch is commonly used for joining vertical seams, such as the side seams of a sweater. The whipstitch is often used for joining horizontal seams, such as the shoulder seams. The backstitch is a versatile stitch that can be used for both vertical and horizontal seams.


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