Originally Posted by
OurWorkbench
I'm wondering if it needs to be cleaned out. Sometimes gunk and/or thread gets under the tension spring. Sometimes the bobbin doesn't get wound evenly and will present problems. I will also double check that I have the thread unwinding the correct direction, if I'm having problems.
Janey - Neat people never make the exciting discoveries I do.
After trying new bobbin, new thread, rethreading, testing on other fabrics, I took off the needle plate and cleaned and reoiled the hook assembly. Also checked that the bobbin case was clean. Still having the same issue. It sews fine for a time, then shows "gathers" in the seam line and I find the bobbin thread no longer threaded through the tension finger on the bobbin case. Not even sure what search terms to use to find a solution.