Threading your sewing machine: the basic path
Most sewing machines thread the same way: you raise the presser foot, raise the needle to its highest point, and guide thread through a series of guides and tension discs before it reaches the needle. Raising the presser foot opens the tension discs so thread can slip between them smoothly. If you thread with the foot down, the thread sits on top of the discs instead of between them, and your stitches will be loose or skip.
Start by placing a spool of thread on the spool pin at the top of your machine—most machines have one pin on the left side. If your machine has a horizontal spool pin (lying flat rather than standing upright), slide the spool onto it and find it with the spool cap. Wind the thread around any thread guides marked on the machine's body, then down through the tension assembly. The exact path depends on your machine model, so check your manual for the threading diagram specific to yours.
Once thread reaches the needle, insert it from front to back through the needle's eye. Leave a 6-inch tail hanging below the needle—you'll need this when you start sewing. Pull both the top thread and bobbin thread toward the back of the machine before you begin stitching.
Key Takeaways
- Always raise the presser foot before threading so the tension discs open and accept thread between them, not on top of them.
- Raise the needle to its highest point before threading to may support it is in the correct position for the thread to enter the eye cleanly.
- Thread the needle from front to back, and leave a 6-inch tail hanging below it before you start sewing.
- Your machine's manual shows the exact threading path for your specific model, since the number and location of guides varies.
- The bobbin must be wound, inserted, and the bobbin thread brought up through the needle plate before you can sew.
Winding and loading the bobbin
The bobbin is a small spool that holds the thread for the underside of your stitch. Before you can use it, you must wind it with thread. Most machines have a bobbin winder on the right side of the machine body. Place an empty bobbin on the winder spindle, then guide thread from your top spool through a small tension guide on the winder itself. Press the bobbin against the machine's wheel or engage the winder clutch—this varies by machine—and the bobbin will spin and fill with thread automatically.
Stop winding when the bobbin is full but not overstuffed; thread should reach near the edge without bulging. Cut the thread and remove the bobbin. Some machines have a sensor that stops the winder automatically when the bobbin is full.
To load the bobbin into the machine, open the bobbin case. On most machines this is a small hinged or removable compartment below the needle plate. Insert the wound bobbin into the case with the thread end facing the direction shown in your manual—usually toward a small slot or tension spring. Pull the thread end through that slot so it sits in the tension spring, then close the bobbin case.
Bringing up the bobbin thread
After the bobbin is loaded, you must bring the bobbin thread up through the needle plate so it is ready to lock with the top thread. Hold the top thread tail in one hand, then turn the hand wheel (the large wheel on the right side of the machine) toward you one full rotation. This lowers and raises the needle, which picks up the bobbin thread and brings a loop to the surface.
Use a seam ripper or small hook to pull that loop up through the needle plate hole. You should now have both the top thread and bobbin thread hanging below the needle, each with a 6-inch tail. Pull both threads toward the back of the machine and under the presser foot before you begin sewing.
Common threading mistakes and how to fix them
The most frequent error is threading with the presser foot down. If your stitches are loose, uneven, or skipping, raise the presser foot, rethread the top thread, and try again. The second common mistake is threading the needle from back to front instead of front to back; this can cause the thread to slip out during sewing.
If the bobbin thread breaks or runs out mid-project, you do not need to rethread the top thread. straightforward wind a new bobbin, load it into the case, bring the thread up through the needle plate, and continue sewing. If the top thread breaks, raise the presser foot, rethread from the tension discs forward, and bring the bobbin thread up again before resuming.
Lint and thread scraps can jam the bobbin area. If your machine is not picking up the bobbin thread, open the bobbin case and use a small brush or lint roller to clean out any debris. A clean bobbin case prevents most tension and pickup problems.
Different bobbin types and what your machine uses
Sewing machines use two main bobbin styles: class 15 bobbins (the most common, plastic or metal, about the size of a large coin) and class L bobbins (slightly larger, used on some older or specialty machines). A few machines use drop-in bobbins that load from the top of the machine rather than from a side case. Check your manual or look at the bobbin case itself—it usually shows which type your machine needs.
If you buy the wrong bobbin type, it will not fit into your machine's case or winder. Bobbins are inexpensive and widely available at fabric stores and online, so buying the correct type for your machine is worth doing once and then keeping spares on hand. Metal bobbins last longer than plastic ones, but both work equally well for most sewing.
When to call a professional or consult your manual
If you have threaded correctly, raised the presser foot, and brought up the bobbin thread but your machine still skips stitches or breaks thread, the problem may be a bent needle, a damaged tension assembly, or a machine that needs professional cleaning. A bent needle is the easiest fix: remove it, insert a fresh needle, and rethread. If that does not solve it, take the machine to a repair shop.
If your machine is brand new or you are using it for the first time, spend 10 minutes with your manual and the threading diagram before you start. Every machine is slightly different, and the manual shows the exact path for yours. Many machines also include a quick-start card or video on the manufacturer's website that walks through threading step by step.
Frequently Asked Questions
Why does my thread keep breaking when I sew?
Thread usually breaks because it is not threaded correctly—most often because the presser foot was down during threading, or because the needle is bent or inserted backward. Raise the presser foot, rethread, and check that the needle is straight and facing the correct direction. If breaking continues, the tension may be too tight; check your manual for how to adjust it.
Can I use any thread in the bobbin, or does it have to match the top thread?
You can use the same thread in both, and most sewers do. Some projects use a lighter-weight bobbin thread to reduce bulk on the underside, but this is optional. The bobbin thread must be the same weight or lighter than the top thread, never heavier.
What happens if I thread the needle from back to front instead of front to back?
The thread may slip out of the needle eye during sewing, causing dropped stitches or broken thread. Always thread from front to back. If you are unsure which direction is front, look at the needle's eye—the front side is the one facing the presser foot.
Do I need to rewind the bobbin every time I run out of thread?
Yes, bobbins must be wound before use. You cannot sew with an empty bobbin. Winding takes less than a minute on most machines, so wind several bobbins at once and keep them ready so you do not have to stop mid-project.
Why is my bobbin thread not coming up through the needle plate?
The bobbin thread may not be threaded through the tension spring in the bobbin case, or the bobbin case itself may not be inserted fully. Open the case, check that the thread end is pulled through the tension slot, and make sure the case clicks or locks into place. Then turn the hand wheel one full rotation to bring the thread up.