How to Wind a Bobbin on a Sewing Machine

On this page (10 sections)

1. How do you wind a bobbin on a sewing machine?
2. Which bobbin should you use for winding?
3. How do you thread the spool through the bobbin guide?
4. How do you know when the bobbin is full?
5. Why is a sewing machine bobbin winding unevenly?
6. Can you wind a bobbin while the machine is threaded?
7. What machine should you choose if you need a front-loading bobbin?
8. What should you do after winding the bobbin?
9. How should you care for bobbins and avoid winding mistakes?
10. Which bobbin-winding choice is right for you?

To learn how to wind a bobbin on a sewing machine, start with the bobbin type named in your manual, follow the marked winding path, and use an empty bobbin. Wind until the thread sits evenly at the rim or the machine's bobbin winder stops.

A bobbin that fills unevenly can cause trouble later. Check the guide path, bobbin fit, and starter thread before continuing.

How do you wind a bobbin on a sewing machine?

Thread the spool through the machine's bobbin-winding guides, fit an empty bobbin on the winding pin, and wind until it's full. The exact path and controls depend on your machine, so use its manual or printed diagram.

1. Raise the presser foot or needle if your manual instructs you to.
2. Place the spool on its pin and guide the thread through the bobbin-winding guides.
3. Pass the thread end through the bobbin's starter hole or notch as directed.
4. Place the empty bobbin on the winding pin and move the pin to its winding position.
5. Hold the thread tail lightly and start slowly. Trim the tail after a few turns if your manual recommends it.
6. Let the machine wind until it stops or the thread reaches the bobbin's rim evenly.
7. Return the pin to its resting position, cut the thread, and remove the bobbin.

Your machine may have a clutch or winding switch that changes how the needle behaves. Use only the controls shown in its instructions.

For other setup steps, see how to use a sewing machine. It covers threading and the basic controls you use before sewing.

Which bobbin should you use for winding?

Choose the bobbin style specified for your exact machine model. Similar-looking bobbins can differ in shape or size and may not fit the bobbin case.

Brother SA156 bobbins suit owners of compatible Brother sewing and embroidery machines who want several clear bobbins for different thread colors. The 10-pack has a security notch and makes it easy to see how much thread remains; skip it if your manual calls for another style.

Singer Class 15J bobbins are for select Singer Futura embroidery machines and the Izek 1500. The 12-count pack includes a reusable storage case, but skip it if your machine calls for Class 15 or another bobbin style.

Check your machine model against the bobbin's compatible models before you buy. For a Brother, the Brother threading guide shows the upper-thread setup, which is separate from the bobbin-winding path.

How do you thread the spool through the bobbin guide?

Follow the winding diagram on your machine or in its manual. The thread usually passes from the spool through one or more guides or a tension disc before reaching the bobbin.

Make sure the thread sits between the guide surfaces. If it slips past a guide, the bobbin may wind loosely or build up thread on one side.

Some machines have a cutter near the bobbin winder. Use it as instructed, or cut the thread with scissors after winding.

Does thread go through the bobbin hole first when winding?

Use the starter hole or notch shown in your manual. Many bobbins have a hole for the thread end, but the correct way to start depends on the machine and bobbin design.

Hold the tail lightly while winding the first few turns so it doesn't get pulled into the layers. Once the thread is held in place, trim the extra tail if your manual advises it.

How do you know when the bobbin is full?

Stop when the winder shuts off or the thread reaches the bobbin's edge evenly. Keep thread below the rim instead of winding a mound over the sides.

If the machine has a stopper that contacts the growing thread, leave it in its working position. Don't push it aside to add more thread.

A full bobbin should have even, firm layers. If thread spills over the edges, unwind the excess before placing the bobbin in its case.

Why is a sewing machine bobbin winding unevenly?

Stop the machine and check the thread path, starter tail, and bobbin seating. Remove the winding and restart with an empty bobbin if the thread has piled up on one side.

Common causes include:

• The thread missed a guide or tension disc.
• The bobbin isn't fully seated on the winding pin.
• The starter thread wasn't held or passed through the correct hole.
• The winding pin is in the wrong position.
• New thread was added over an old winding.

Check the manual for the correct winding direction and guide path. Start slowly so you can catch a problem before the bobbin is full.

If thread breaks during sewing, check the upper thread path and the bobbin area. See why sewing machine thread keeps breaking for other common causes.

Can you wind a bobbin while the machine is threaded?

Often you can, but follow your model's instructions. Some machines let you wind from the spool while the upper thread stays in place; others require a separate path or a change to the clutch.

Don't assume the same steps work across brands. For Singer-specific setup, see how to thread a Singer sewing machine, and use the bobbin-winding diagram for the winding path.

What machine should you choose if you need a front-loading bobbin?

Consider the SINGER M3330 if you want a machine with a front-loading bobbin and included Class 15 transparent bobbins. Its 23 built-in stitches provide 97 stitch applications, and the included accessories also include several presser feet.

This machine suits someone looking for a general sewing machine with built-in stitch options. Skip it if you only need replacement bobbins or your current machine requires a different style.

The included Class 15 bobbins are not Class 15J bobbins. Match replacements to your machine's manual.

The two styles aren't interchangeable. For help weighing machine features, see how to pick the best sewing machine for your home.

What should you do after winding the bobbin?

Cut the thread, remove the bobbin, and insert it in the direction shown in your manual. Pull the thread through the bobbin-case slot or guide as directed.

Turn the handwheel as instructed to bring up the bobbin thread, then draw both thread tails behind the presser foot. This keeps them clear as you begin sewing.

If the bobbin doesn't sit flat, turn smoothly, or fit the case, stop and check its style and position. Don't force it into place.

How should you care for bobbins and avoid winding mistakes?

Keep bobbins matched to the machine and start with an empty one when winding a new color. Store spares together so you can identify the right type when you need it.

Don't wind thread over a partly wound bobbin. The added layers may sit unevenly and can tangle or break.

The Singer Class 15J set also advises starting with an empty bobbin. Replace a bobbin if it becomes chipped, bent, or otherwise damaged.

Avoid overfilling, pulling hard on the starter thread, or skipping a guide. These mistakes can leave loose loops, uneven layers, or thread above the rim.

Which bobbin-winding choice is right for you?

Pick bobbins by machine compatibility first, then by how many thread colors you keep ready. Brother owners with compatible models can choose the SA156 10-pack; select Singer Futura and Izek 1500 owners can choose the Class 15J 12-pack with a case.

If you're shopping for a machine with a front-loading bobbin, compare the SINGER M3330's included Class 15 bobbins with your project needs and machine preferences. For winding itself, the key is the same: follow your machine's path, begin with an empty bobbin, and stop when the thread fills evenly to the rim.

For your next setup step, return to how to use a sewing machine and follow the instructions for threading and inserting the bobbin.

Frequently asked questions

Why is my sewing machine bobbin not winding evenly?

An uneven bobbin often means the thread missed a guide, the bobbin isn't fully seated, or the starter tail wasn't held in place. Stop, remove the thread, and restart with an empty bobbin after checking your manual's winding path.

Wind slowly for the first few turns so you can see whether the thread is spreading across the bobbin.

Should I wind a bobbin all the way full?

Stop when the machine's bobbin winder shuts off or the thread reaches the bobbin's edge without spilling over. Don't add extra thread by hand.

An overfilled bobbin may not sit or turn properly in its case.

Remove excess thread before putting it in the machine.

Can I add thread to a partly wound bobbin?

Start with an empty bobbin when winding a new color or refilling. Adding thread over a partial winding can create uneven layers that may tangle or break while sewing.

Keep the partly wound bobbin for a later project if its thread is still useful.

Do all sewing machines use the same bobbin?

No. Bobbins differ in shape, height, and class, so use the type named in your machine manual.

A bobbin that looks close may not fit the case or feed thread correctly.

Check the model compatibility before buying replacements, especially when choosing between Class 15 and Class 15J.