Why does bobbin thread keep jamming?
Bobbin Thread Tangling
The bobbin keeps pulling and jamming collecting a lot of thread beneath your fabric. There are several culprits for this ranging from a dull needle, improper threading or tension. The tension in both your upper and bobbin threads need to be even. The bobbin could also be placed incorrectly.
How do I stop my bobbin thread from getting caught?
Check that the upper thread is feeding freely without obstruction (like getting stuck behind the spool cap or getting caught on any rough spots o the thread spool itself). Make sure the bobbin is correctly seated in the bobbin case (bobbin holder), and check that the upper thread tension is not set too tightly.
Why does my needle keep jamming?
The Needle is Broken/Bent
Sewing machines can also jam if there is a problem with the needle. It could be bent or broken, preventing the thread from going through the fabric. Check your sewing machine needle to see if there are any problems with it.
Why is my upper thread getting caught in the bobbin?
The most probable cause of the top thread stuck in sewing machine is that the bobbin is not wound properly. It may be loose or there may be a problem with the pickup.
When the machine jams while sewing what will be the probable cause?
When your sewing machine gets jammed while stitching a fabric, the most probable cause is the feed dogs. The feed dogs are the tiny teeth that move the material under the sewing machine needle. If the feed dogs are too low or contain lint and debris, then your sewing machine stands the risk of getting jammed.