It may happen that your thread breaks when you machine sew. Do not panic, follow this step by step to solve the problem and sew or embroider or do quilting without worry. This guide details the most common causes and details the solutions.
Rethreading your sewing machine
The sewing machine thread can simply break because it was not threaded correctly: you may have missed a loop in the way and the thread may get caught. The first reflex to have when the thread breaks is to redo the threading of the machine being careful, as well as that of the bobbin.
Also take the opportunity to dust and clean your machine, removing any small bits of thread that may have remained in the bobbin case (lift the needle plate!). Once the wire is in place, check that you can pull it gently without it getting stuck somewhere.
If thread continues to break, check needle and thread type
If the thread is threaded correctly, the problem may be with the needle or the thread itself. Even a brand new needle can be faulty and have flaws that will wear down the thread. Similarly, a needle that has been used may be damaged, especially if you have stuck fusible interfacing with it. In this case, test a new needle and see if that solves the problem.
If you think the needle is not faulty, check the needle size. Indeed, the needle must be adapted to the fabric and the thread used. Thus, if you use a thick needle with very fine thread, or conversely a thin needle with thick thread, there is a risk that the thread will break. Click here to learn how to choose the right needle.
Check the quality of the thread
If the thread is not of good quality, chances are it will break more easily. So try another yarn if the previous solutions don't work (and keep the poor quality yarn to use as a basting yarn!) You will find quality yarns at Butinette in particular. I personally prefer DMC and Guttermann threads
In any case, certain types of threads are more fragile: metallic threads, light embroidery thread and single-strand threads. In this case, special attention should be paid to the needle and threading.
Slow down
In the case of quilting or embroidery machines, sewing quickly in the curved parts can cause the thread to break. Try sewing at a slower speed instead, or decrease the thread tension (even to 0!)
Use thread lubricant
You can spray a special lubricant on your cutting table or embroidery machine after cleaning. This lubricant facilitates the sliding of fabrics during sewing and protects the thread and prevents the accumulation of textile dust residues on the thread.
If all else fails, consult
If your thread continues to break after trying all the tips above, it's time to deep clean your machine or even oil it if possible (check your manual if this is recommended). Check the bobbin (it may have a snag that will cut the thread), the needle plate... If you can't find anything, take your machine to an approved repairer.