Threading the bobbin is simpler than it looks
A bobbin is the small spool that holds thread underneath your fabric. On a Brother machine, you wind thread onto an empty bobbin using the machine's built-in winding mechanism, then insert it into the bobbin case below the needle plate. The whole process takes about two minutes once you know the steps.
Most Brother machines use the same bobbin-winding method, whether you have a basic model or one with more features. The bobbin itself is a plastic or metal spool about the size of a coin, and you'll need an empty one to start. Brother machines come with several bobbins in the box, and you can buy replacements at any fabric or craft store.
Key Takeaways
- Wind the bobbin on the machine's top spindle before you sew, using the bobbin winder dial to control thread tension.
- Thread the bobbin winder in a specific path: through the tension guide, around the bobbin, and into the winder itself.
- Stop winding when the bobbin is full and the automatic shutoff clicks, or when the bobbin feels firm to the touch.
- Insert the wound bobbin into the bobbin case with the thread tail pointing toward you, then lower the presser foot to set tension.
Prepare the bobbin and thread
Start with an empty bobbin and the thread color you want to use. Place the bobbin on the bobbin winder spindle at the top of your machine—this is the small metal post on the upper right side of most Brother models. Push the bobbin all the way onto the spindle until it sits flat against the metal collar.
Cut a length of thread about 6 inches long from your spool and hold it in your hand. You'll use this tail to thread the bobbin winder in the next step. Make sure your presser foot is up—this disengages the tension discs and allows thread to flow freely to the bobbin.
Thread the bobbin winder
The thread path for bobbin winding is different from the path for regular sewing. Hold the thread tail you cut and guide it through the bobbin winder tension guide, which is a small metal or plastic loop on the machine's upper panel. This guide controls how tightly the thread winds onto the bobbin.
After threading through the tension guide, wrap the thread around the bobbin itself—usually one or two loops is enough. Then insert the thread end into one of the small holes or slots on the bobbin's edge. The exact location depends on your Brother model, so check your manual if you're unsure, but most bobbins have an obvious slot near the rim.
Once the thread is in place, hold the thread tail loosely and press the bobbin winder lever or button. On most Brother machines, this is a small lever on the side of the bobbin winder spindle that you push toward the bobbin to engage the winder.
Wind the bobbin to full
Press your foot pedal gently to start the machine. The bobbin will begin to spin and wind thread onto itself. Keep slight tension on the thread tail with your fingers for the first few rotations—this helps the thread seat properly in the bobbin's slot. After three or four rotations, you can release the tail and let the machine wind freely.
Most Brother machines have an automatic shutoff that stops the bobbin winder when it reaches full capacity. You'll hear or feel a click, and the winding will stop on its own. If your machine doesn't have automatic shutoff, watch the bobbin and stop when it feels firm and full—the thread should form an even, rounded shape across the bobbin's width, not a loose or lumpy pile.
Remove the bobbin from the spindle by pushing it off gently. Trim the thread tail close to the bobbin with scissors.
Insert the bobbin into the bobbin case
Raise the presser foot and open the bobbin cover on the front of your machine. On most Brother models, this is a hinged or removable plate just below the needle. The bobbin case sits underneath—it's a small metal or plastic housing with a slot or hook inside.
Hold the wound bobbin with the thread tail pointing toward you. Insert the bobbin into the case by sliding it into the slot or resting it on the bobbin case post, depending on your model. The thread tail should pass under the tension spring or hook inside the case—this is what controls how much tension the bobbin thread has during sewing.
Pull the thread tail gently to make sure it's seated under the tension mechanism. You should feel a slight resistance. Close the bobbin cover and you're ready to sew.
Troubleshoot if the bobbin won't wind evenly
If the thread piles up on one side of the bobbin or winds loosely, the thread may not be seated correctly in the bobbin slot. Stop the machine, remove the bobbin, and rethread it through the tension guide and into the bobbin slot. Make sure the thread is pulled snug but not so tight that it's hard to turn the bobbin by hand.
If the bobbin winder keeps stopping before the bobbin is full, check that the presser foot is raised. Some Brother models won't wind if the presser foot is down, because the tension discs are engaged. If the presser foot is up and winding still stops early, the automatic shutoff may be too sensitive—try winding a second bobbin to see if it's a consistent issue or a one-time glitch.
If thread keeps breaking during winding, the tension guide may be too tight or the thread may be catching on something. Rethread slowly and make sure the thread passes smoothly through every guide and slot before you start winding again.
Keep extra bobbins wound and ready
Once you're comfortable with the process, wind several bobbins at once so you always have a spare ready. This saves time when you're switching thread colors or running a longer project. Store wound bobbins in a small container or box so they don't roll around and the thread doesn't unwind.
Brother bobbins are standardized across most of their models, so you can use the same bobbins on different machines if you own more than one. However, some specialty machines use slightly different bobbin sizes, so check your manual if you're using a machine you're not familiar with.
Frequently Asked Questions
Can I use a bobbin from a different brand on my Brother machine?
Most universal bobbins work in Brother machines, but Brother bobbins are inexpensive and designed to fit perfectly. If you use a different brand, test it on scrap fabric first to make sure the tension is even and the thread doesn't slip during sewing.
What if my bobbin winder keeps slipping and won't turn?
The bobbin may not be pushed all the way onto the spindle. Remove it and slide it on again until you hear or feel it click into place. If it still slips, the spindle itself may be worn, and you should contact Brother support or a repair shop.
Do I need to wind the bobbin tightly or loosely?
Wind it firmly but not so tight that the thread is stretched. The bobbin should feel solid when you hold it, and the thread should form an even, rounded shape. If it's too loose, tension problems will show up in your stitches; if it's too tight, the thread may break during winding or sewing.
Can I wind a bobbin while I'm sewing with another one?
Yes. Insert a wound bobbin into the bobbin case, close the cover, and sew normally. The bobbin winder spindle is separate and won't interfere. This is a good way to keep production moving if you're working on a longer project.
How do I know when to replace my bobbin?
When the bobbin is nearly empty, you'll see the thread running low and the bobbin will feel light. Wind a fresh one before you run out completely, because running out mid-seam can leave loose thread on the back of your fabric.