Sewing Machine Bobbins: 5 Tips to Avoid Mistakes (2025)

Introduction

Sewing machine bobbins : while this small accessory may seem trivial, it is essential to ensure the quality of your stitches and the smooth running of your sewing projects. A poorly chosen or improperly filled bobbin can cause many problems: uneven tension, jamming , or even skipped stitches. Whether you use a plastic or metal bobbin , each machine has its requirements, and it is important to understand how to choose a compatible bobbin for the sewing machine .

In this article, you'll discover what a bobbin is for, how to wind it properly, the differences between materials, and how to avoid common sewing mistakes. Whether you're a beginner or an experienced sewer, mastering the different types of bobbins is a fundamental step toward smooth, clean, and snag-free sewing. Follow our practical tips and adopt the right habits to optimize your bobbin thread tension and achieve successful seams every time.

What is a bobbin used for in a sewing machine?

Essential to the proper functioning of your machine, the sewing machine bobbin contains the bottom thread, which, combined with that of the needle, forms each stitch.

• Provides the bottom thread of the stitch
• Participates in the balance of thread tension
• Ensures the regularity of the stitch with the needle

What is the difference between a plastic and a metal can?

The choice between plastic or metal can depends on your machine and your preferences.

Criteria	Plastic can	Metal can
Weight	Light	Heavier
Compatibility	Electronic machines	Mechanical machines
Stability	Sometimes vibrant	More stable
Price	Economic	Slightly more expensive
Visible threading	Yes	No

How to fill a can correctly?

Careful bobbin filling is essential to avoid jams or uneven stitches.

Key steps:

• Place the upper thread spool on its holder
• Pass the wire through the guide provided for winding
• Attach the empty bobbin, start winding
• Fill to 80-90% , then cut the thread

Which cans are compatible with my machine?

Sewing machine bobbins are not universal.

Compatibility by brand:

• Brother : plastic only, height 11.5 mm
• Janome : plastic or metal depending on the model
• Juki : often metal, be careful with the bobbin case
• Singer : mostly plastic, except older models

Common Can Problems (and Solutions)

An improperly wound or unsuitable bobbin can cause malfunctions.

Common mistakes:

• Bobbin not inserted correctly → noise, skipped stitches
• Irregular tension → poorly wound thread
• Jam → clean the bobbin case

Sewing Machine Bobbin Bonus: Pro Tips

Optimize your organization and avoid repeated mistakes.

Practical advice:

• Prepare several bobbins of the same thread in advance
• Store them in a transparent box
• Clean the can area every 3-4 projects

Sewing Machine Bobbins FAQ

Are all cans compatible with all machines?

No, each machine has specific requirements in height, diameter and material.

How do I know if my can is installed incorrectly?

The stitching is uneven, the thread is tangled, or the machine is making an unusual noise.

Should we always use the same brand of bobbin as the machine?

This is not mandatory, but highly recommended for optimal compatibility.

Which can is better, metal or plastic?

Metal is more stable, but plastic is often more compatible with modern machinery.

Can you reuse an old, already filled can?

Yes, if it is in good condition, well filled and suitable for your model.

Conclusion

Often overlooked, sewing machine bobbins play a fundamental role in the success of your projects. Choosing between a plastic or metal bobbin , knowing the compatibility with your machine and mastering the filling are all crucial steps to avoid unbalanced tensions, jams and irregular stitches. By applying the right gestures, you guarantee the fluidity of your sewing and gain in comfort as well as quality. Take the time to check your bobbin type , fill your bobbin properly, and regularly maintain the bobbin case . A small element, but a big difference for your creations!