Why is my sewing machine making loops underneath?
A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath. By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads.
Why is my top thread looping?
Looping on top generally means the needle tension is too loose. Change your needle. The golden rule for needle selection is to use the smallest sharpest needle that can carry the thread through the fabric without damage to the thread, fabric, or needle. Change your thread.
Why is my upper thread getting caught in the bobbin?
This can be caused if the top thread tension is too tight, or if the bobbin thread is not in the bobbin case tension. … 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.