A Step-by-Step Guide on How to Thread a Bobbin

how to thread a bobbin


Threading a bobbin is a fundamental skill that every sewing enthusiast must master. Whether you’re a seasoned seamstress or just starting your sewing journey, understanding how to properly thread a bobbin is crucial for smooth and efficient sewing. In this article, we will provide you with a comprehensive, step-by-step guide on how to thread a bobbin, ensuring that your sewing projects are a success.

Why Is Bobbin Threading Important?

Before we dive into the steps of threading a bobbin, it’s essential to understand the role of the bobbin in sewing. The bobbin is a small spool that holds the bottom thread, while the upper thread is loaded onto the sewing machine’s spool pin. When both threads are properly threaded and tensioned, they work together to create secure and balanced stitches. Incorrect bobbin threading can lead to issues like thread jams, uneven stitches, and frustrating sewing experiences.

Gather Your Supplies

To start, make sure you have the following supplies on hand

1. Sewing machine with an empty bobbin case.

2. Empty bobbin compatible with your sewing machine.

3. Thread that matches your project.

4. A pair of small scissors.

Having these items readily available will ensure a smooth and hassle-free bobbin threading process.

Wind the Bobbin

Begin by placing the empty bobbin on the bobbin winding spindle of your sewing machine. This spindle is usually located on the top or side of the machine. Follow these steps to wind the bobbin

1. Take the end of your thread and place it through one of the small holes in the bobbin.

2. Pull the thread through the hole and leave a short tail, about two inches.

3. Engage the bobbin winding mechanism by pushing or turning the appropriate switch or lever on your sewing machine. This disengages the needle mechanism, allowing you to wind the bobbin without sewing.

Thread the Upper Thread

Before threading the bobbin, make sure you have properly threaded the upper thread. Follow these general steps for upper thread threading

1. Place a spool of thread on the spool pin at the top of your sewing machine.

2. Pull the thread through the thread guide or tension discs, following the machine’s threading path. Refer to your sewing machine’s manual for specific threading instructions.

Thread the Bobbin

Now that the upper thread is properly threaded, it’s time to thread the bobbin. Follow these steps

1. Hold the thread tail from the bobbin and gently step on the sewing machine’s foot pedal. The bobbin will start winding, and the thread will wrap around the bobbin.

2. Make sure the thread winds evenly and stays within the bobbin’s boundaries.

3. Once the bobbin is full, the winding will stop automatically, or you may need to disengage the bobbin winding mechanism manually.

Insert the Bobbin

With your fully wound bobbin in hand, it’s time to insert it into the bobbin case. Follow these steps

1. Open the bobbin case and ensure it’s clean and free from any debris or old thread.

2. Hold the bobbin so that the thread unwinds in a counterclockwise direction.

3. Place the bobbin into the bobbin case, ensuring that the thread passes through the tension spring.

Thread the Bobbin Case

To complete the bobbin threading process, follow these steps:

1. Hold the bobbin case by its hinged latch and insert it into the bobbin case holder in the sewing machine.

2. While holding the latch, guide the thread through the bobbin case’s slot or tension discs. Make sure the thread is securely placed in the tension spring.

Secure the Thread

After threading the bobbin and the bobbin case, it’s essential to secure the thread before you start sewing. Follow these steps

1. With the upper thread and bobbin thread in place, hold the loose ends of both threads.

2. Gently turn the handwheel on the sewing machine to lower the needle and bring the bobbin thread up through the throat plate.

3. Pull both threads to the back of the machine, leaving a few inches of thread tails.


Why is the bobbin thread loose?

The bobbin thread will be loose if the bobbin thread is threaded incorrectly or the bobbin thread is not behind the tension spring on the bobbin case.

Why is the bobbin thread tangled?

If the upper thread is incorrectly threaded, the upper thread passed through the fabric cannot be firmly pulled up and the upper thread becomes tangled in the bobbin case, causing a rattling noise.


Threading a bobbin may seem like a simple task, but it’s a crucial skill that forms the foundation of successful sewing projects. By following the step-by-step guide outlined in this article, you can ensure that your bobbin is properly threaded, leading to smooth and efficient sewing. As you practice and become more comfortable with this process, you’ll find that threading a bobbin becomes second nature, allowing you to focus on your creative sewing endeavors with confidence.

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