How do I fix the tension on my bobbin?

What happens if bobbin tension is too loose?

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 sewing machine looping underneath?

Causes of Stitches Looping

Looped stitches are usually caused by improper tension. … Looping of stitches is sometimes caused by placing the bobbin in the bobbin case the wrong way. Check your machine’s manual for directions on inserting the bobbin. There may be lint, dirt, or thread between tension discs.

Do I need to adjust bobbin tension?

Bobbin thread tension has been correctly set at the factory.

The bobbin tension can become looser even if you haven’t changed the setting yourself. Sometimes it’s still necessary to loosen or tighten the bobbin tension. You can change the front loading bobbin tension easily. But with drop-in bobbins – it’s not so easy.

Why is my bottom stitch not straight?

If your thread is pulled tight on the underside and not forming an even stitch then (counter-intuitively) it’s usually the top thread tension that’s wrong. Sometimes very lightweight fabrics such as sheers can get dragged down into the machine so it’s a good idea to use a straight stitch plate.

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