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AngelAlix1980
3 months ago

This looks like the under thread is not properly grasped if I interpret the pictures correctly.

It may be due to the fact that an incorrect thread tension is set which also the needle is not suitable for the fabric.
Or that your machine needs a little oil again. If the machine has been moved or there might be a bump, something can also be slipped or bent.

The lower thread spool is snapped in correctly?

marga60rita
3 months ago
  • Carefully make a little firmer
  • Exchange needle (maybe glue it or other)

Good luck!

Spiritoso
3 months ago

The tension of the upper thread is too weak or the tension of the lower thread is too strong

Or the needle is bent. Set a new one

Spiritoso
3 months ago
Reply to  Svenja1110

The upper thread tension is regulated via a setting wheel on the sewing machine, usually on the top left or in the front area. The higher the number on the wheel, the tighter the thread is tensioned

maja0403
3 months ago

Then the thread tension is not correct. When on top of the fabric, it is usually the under thread tension. Or you have wrongly trimmed the machine or you have incorrectly inserted the spool.

Schnuppi3000
3 months ago

Does the problem arise with other threads?

Did you oil the machine?