Wind the bobbin before you thread the needle
The bobbin is the small spool that holds thread underneath your fabric and works together with the top thread to form stitches. On a Singer machine, you wind it by hand using the bobbin winder — a small wheel or mechanism on the side or top of your machine. You must wind a fresh bobbin before you start sewing, because an empty or partially wound bobbin will cause skipped stitches, loose tension, and thread breaks mid-project.
The process takes about two minutes and uses the same thread you'll use on top. Most Singer machines have the bobbin winder in the same location, though the exact steps vary slightly between models. If you have your machine's manual, check it for your specific model number — the photos will show exactly where your winder sits. If you don't have the manual, you can find it free on the Singer website by searching your model number.
Key Takeaways
- The bobbin winder is a small wheel or dial on your Singer machine that you turn by hand to wrap thread onto an empty bobbin.
- You must disengage the needle before winding, or the needle will move up and down and jam the thread.
- Wind slowly and evenly, stopping when the bobbin feels full and the thread begins to slip slightly on the wheel.
- Insert the wound bobbin into the bobbin case with the thread tail pulled through the tension spring before you thread the needle.
Locate your bobbin winder and prepare the machine
On most Singer machines, the bobbin winder sits on the right side of the machine near the top, or on the top-right corner of the machine bed. Look for a small wheel or dial with a rubber or metal rim. Some older Singer models have the winder on the left side instead. If you're unsure, check your manual or look at the machine itself — the winder is always visible and accessible without opening any panels.
Before you start winding, raise the presser foot (the metal piece that holds fabric down). Raising the presser foot disengages the tension discs, which allows thread to flow freely onto the bobbin. If you wind with the presser foot down, the thread will not wind evenly and may break. Next, turn the handwheel (the large wheel on the right side of the machine) toward you until the needle is at its highest point. This prevents the needle from moving while you wind.
Thread the bobbin winder and find the empty bobbin
Take an empty bobbin — a small plastic or metal spool that came with your machine or that you purchased separately. Place it onto the bobbin winder shaft (the small post that sticks out from the winder). Push it all the way onto the shaft until it sits flush against the winder wheel. The bobbin should not wobble or slide side to side.
Now take the thread from your top spool and guide it through the bobbin winder tension guide — a small slot or hook on the winder itself. This guide keeps tension even as you wind. Pull about 2 to 3 inches of thread past the guide, then wrap it around the bobbin two or three times by hand in the direction the bobbin will turn. Tuck the thread end under the thread you've wrapped so it stays in place. This starting wrap prevents the thread from slipping off as you begin winding.
Wind the bobbin slowly and stop at the right fullness
Turn the bobbin winder wheel slowly and steadily toward you. Do not rush — winding too fast causes uneven tension and can break the thread. As you turn, watch the thread wrap around the bobbin in neat, even layers. The thread should cover the bobbin from one end to the other without bunching or crossing over itself. If it does bunch, stop, adjust the thread position slightly, and continue.
Keep turning until the bobbin feels full and the thread begins to slip slightly against the winder wheel. You'll feel the resistance change — the thread will no longer grip tightly and will start to slide a little under your finger. This is the signal to stop. Do not overfill the bobbin, because too much thread causes tension problems and the bobbin may not fit properly into the bobbin case. A correctly wound bobbin should be plump but not bulging.
Remove the bobbin and trim the thread
Once the bobbin is full, remove it from the winder shaft by pulling it straight off. The thread will still be attached to the bobbin. Trim the thread about 6 inches from the bobbin using scissors or the thread cutter on your machine (many Singer machines have a small cutter built into the bobbin winder area). Leave a tail of thread hanging from the bobbin — you'll use this tail to thread the bobbin case.
Inspect the wound bobbin. The thread should be smooth and even, with no loose wraps or gaps. If you see loose spots or uneven winding, you can rewind it, but most bobbins wound this way will work fine. Set the full bobbin aside and prepare to insert it into the bobbin case.
Insert the bobbin into the bobbin case
Locate your bobbin case — a small metal or plastic housing that sits under the needle plate (the flat metal plate with the needle hole). On most Singer machines, you access it by removing the needle plate or by opening a small door on the front of the machine. Check your manual for the exact location on your model. Remove the bobbin case by unlatching the small metal clip or lever that holds it in place.
Drop the wound bobbin into the bobbin case with the thread tail pointing toward the tension spring — a small metal wire or slot inside the case. Pull the thread tail through the tension spring so the thread sits in the groove. This tension spring controls how much thread feeds out as you sew. If the thread is not threaded through the spring, your stitches will be too loose.
Slide the bobbin case back into its slot under the needle plate and find it with the metal clip or lever. Make sure it clicks or latches firmly — a loose bobbin case will cause skipped stitches and uneven tension. You're now ready to thread the needle and begin sewing.
Troubleshoot common bobbin winding problems
If the thread breaks while you're winding, the tension guide may be too tight or the thread may have caught on something. Stop, rewind the thread through the guide, and try again more slowly. If it breaks again, check that the thread spool is sitting properly on the spool pin and that nothing is blocking the thread path.
If the bobbin winds unevenly with bunched or crossed thread, the thread may not be seated properly in the tension guide, or you may be winding too fast. Remove the bobbin, rethread it through the guide, and wind again slowly. If the bobbin feels loose or the thread slips when ready, you may not have wrapped the starting thread around the bobbin enough times — try wrapping it four or five times instead of two or three.
If the bobbin won't fit into the bobbin case after winding, it is overfilled. Unwind a small amount of thread by turning the winder backward, then try again. A bobbin should slide into the case smoothly without forcing.
Frequently Asked Questions
Can I wind a bobbin with a different color thread than the top thread?
Yes. The bobbin thread and top thread don't have to match. Many sewers use neutral colors like white or gray in the bobbin to save money. Just make sure both threads are the same weight — using thick thread in the bobbin with thin thread on top, or vice versa, causes tension problems.
How many bobbins should I wind before I start sewing?
Wind at least one full bobbin before you begin. If you're working on a large project, wind two or three so you don't run out mid-seam. Winding takes only a few minutes, so it's worth doing extras while you have the machine set up.
What if my bobbin winder doesn't have a tension guide?
Older Singer models sometimes have a straightforward winder without a guide slot. In that case, just wrap the thread around the bobbin by hand as described, and turn the winder slowly. The thread may not wind quite as evenly, but it will still work. Wind slowly and watch for bunching.
Do I need to rewind the bobbin if I change thread colors?
Not necessarily. If you have a bobbin wound with a color you'll use again soon, you can leave it as is. If you need a different color right now, wind a fresh bobbin. Most sewers keep several bobbins wound with their most-used colors to save time.
Why does my bobbin keep slipping off the winder shaft?
The bobbin may not be pushed all the way onto the shaft. Push it firmly until it sits flush against the winder wheel with no gap. If it still slips, the shaft may be worn or the bobbin may be damaged. Try a different bobbin, or contact a Singer dealer if the shaft itself is bent or loose.