Bobbin bunches up
My machine will sew several stiches and then the bobbin will bunch up causing the upper thread to spin around on top and wrap around in the bobbin case.
Irons - Singer - 9960 - 9960 Quantum Stylist
Copyright © 2024 QA.XPDF.PUB - All rights reserved.
Answers & Comments
Classic burr on the hook problem would be my first guess. If the thread remains on the hook when it makes the next revolution all sorts of ugly things happen such as you described. I made a video that might help.