Common Sewing Questions: Why Does My Sewing Machine Thread Break?
Has this ever happened to you? You have taken a thread out of your draw to sew with and when you have finally threaded your machine and started sewing your hem, the thread snaps! Typically, we quickly rethread the machine and (with our fingers crossed) start sewing again.
Thread breaks can be more than just an annoyance, they can cost time and affect the quality of the finished project. If your sewing machine is breaking thread, there are multiple solutions that can prevent this from occurring in the future. So without further ado, here are 5 ways to prevent sewing machine thread breaks?
1 - Right Thread for the Job?
Starting off, we should mention that every thread is different. different compositions (cotton, polyester, silk, etc), different purposes (dressmaking, denim, upholstery), different thicknesses (albeit sometimes microscopic), different dying methods, different staple lengths, different wax levels, and they can even age at different rates. These differences can be an asset at times, and a determent at others. It is always recommended to purchase good quality threads that meet the needs of the project undertaken. We recommend Gutermann, Madeira, Mettler, and Rasant for everyday sewing, dressmaking and quilting; Gutermann, Madeira, and RA for embroidery, and Serafil for heavy-duty applications.
2 - Check the Sewing Machine’s Threading Channels
Over time, little nicks and burrs can form on your sewing machine. If your thread regularly breaks on your machine (no matter the colour), then the thread may be rubbing up against a burr, thereby weakening it. Examine the threading channels (with a special focus to the start of the take-up lever channel, the point just before the thread goes to the needle, and the needle plate. If you have any rough spots on these points, try to smooth them out with very fine sandpaper or a flat surface.
3 - Check the Sewing Machine’s Tension
According to Janome, a majority of sewing is performed with an upper tension of “4” (or “Auto” on some computerised models). This is not to say that all sewing has to be done with this tension, however, it is a great place to start when diagnosing if the thread break is due to the thread or the sewing machine. Refer to your instruction manual for your machine’s factory tension settings.
4 - Is your Needle the Right Size?
Not only does the needle play a pivotal role in the formation of the stitch (joining the upper thread and bobbin together), it can also play a diabolical role in snapping threads. This can occur if the needle is the wrong size for the fabric that it is stitching through; as the needle can flex during the stitch, potentially allowing the thread to rub against the needle well on the needle plate (and potentially breaking the needle itself). Janome recommends changing the needle every 8 sewing hours (or when you are starting a new project). If you need more needles, we have all types available in our store.
5 - How Old is the Thread?
Did you know that most threads have a shelf life? Typically within 2 to 3 years, threads can start to deteriorate from heat, humidity, and UV exposure. So, does this mean that you have to throw out the building collection in your sewing cabinet? NOT AT ALL! There are a few tips that can extend the shelf life of your thread dramatically. Including:
- Storing your threads in a cool dry and dark space (inside a cupboard/wardrobe, or draw). If you have access to a plastic storage container with a lid (or a thread storage box), place your threads inside the container, which will prevent the buildup of dust and particulates on the exterior of the thread.
- Use a thread conditioner every few months. These conditioners leave a coating on the exterior of the thread, acting as a shield, protecting the thread. This protects the thread but does not introduce any oils to your sewing machine’s tension disks as it passes through them. While there are several types of thread conditioners available on the market, we recommend sticking to a clear fine grade non-staining silicone spray (like Helmar’s Silicone Spray, or Thread Magik).
Hopefully, this has saved a few threads from going into the bin and a few sewists from having an awkward conversation with their sewing machine.
Happy Stitching.