Why is my bottom bobbin not spinning?

Is the bobbin supposed to spin?

Insert the bobbin making sure the bobbin rotates counterclockwise when you pull the thread. NOTE: This is a very important step as the bobbin can become unthreaded and cause sewing problems if it rotates clockwise.

How do you fix bobbin tension?

Bobbin tension or bottom tension is fixed by adjusting a small screw next to your bobbin case’s thread opening.To adjust, use a tiny screwdriver and turn the tiny screw to the right for tighter tension or the left to loosen bobbin tension.

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.

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.

Does bobbin direction matter?

Make sure the bobbin thread unrolls in the correct direction when installing the bobbin into the bobbin case. … If the thread unrolls in the wrong direction, the needle may break or the thread tension will be incorrect. Use a bobbin that has been correctly wound with thread.

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When should I replace my bobbin case?

As long as you take good care of your bobbin case, it will perform well. However, eventually, it will cease to sew smoothly and will need to be replaced. Sometimes people think they only need to replace certain parts of the bobbin case, like the tension spring or the tension screw.