What do I check when stitch formation is poor?
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- Bobbin thread too taut
- Bobbin thread runs off irregularly
- Needle thread is too loose
- Feeding motion is irregular or incorrectly timed to the sewing mechanism
-
Sewing thread is subjected to too much strain during sewing and is
weakened, so that the thread tension required for good stitch formation
causes thread breakage
- Needle hole and presser foot shoe are not rounded well enough, or damaged