If the thread has knots, is not smooth, is uneven, or is loose on the bobbin, then it has not been threaded correctly. If your machine uses a bobbin case, follow your sewing machine’s instructions to remove the bobbin from the case and re-thread it.
Why is my bobbin thread bunching up singer?
Threads can get bunched up at the beginning of sewing if the top and bobbin threads have not been properly placed underneath the presser foot before starting to sew. Ensure that both threads are under the presser foot and placed toward the back of the machine before lowering the presser foot to start sewing.
Why does my sewing machine keep jamming underneath?
However certain you are that the problem with the machine is most likely due to a huge tangled mess of thread in the bobbin underneath the fabric, the most common reason for the jamming is usually the lack of sufficient tension in the upper thread.
Why is my bobbin thread not catching?
Check the upper thread. – Check to see if your upper tension is too tight. … – Your thread could be caught on something between the needle and your spool of thread if so, your thread will be too tight for the needle to pick up the bobbin thread. – Make sure that the upper thread is threaded properly.