What causes a bobbin to wind unevenly?
If the correct spool cap is not being used the thread will become tangled on the spool and cause the spool of thread to jump around and hang the thread. NOTE: If the thread gets caught or tangled while trying to wind the bobbin, the bobbin could be wound unevenly. … Verify that the bobbin winding thread path is correct.
Why is my thread bunching 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.
Is there such a thing as a bobbin winder?
A bobbin winder is one of those small tools that will help you a lot when you are in the middle of a large sewing project. … Plug in the bobbin winder to an electrical source or attach the batteries. Place your thread spool in the thread stand.
Why do sewing machines lock up and won’t sew?
Thread bunched up in the shuttle race often causes the sewing machine to lock up. … Clean lint and debris out of the shuttle race; they can prevent the needle from hooking the thread, resulting in thread bunching up in the shuttle race and jamming the needle.
How do I adjust the tension on my singer bobbin?
Place a small screwdriver on the head of the screw on the side of the bobbin case. Turn very slightly clockwise to increase the tension on the Singer bobbin. Turn slightly counterclockwise to decrease the bobbin tension.