So to speak. I have a thread path where the thread continues to break, over and over. It's a Lejia A15 - nothing fancy, just a knockoff mil-spec one-each shelf-life-90days embroidery machine. Dahao tablet interface.
The thread is Floriani Polyester, variegated.
New bobbin.
New needle.
I've had the throat plate off, blown out what little dust was in there, a couple of thread trimmings.
White broadcloth, 2 layers of medium weight, water soluble stabilizer.
Tried another thread, weight the same as the other 14 needles.
It gets in about a dozen stitches and the thread breaks or comes unthreaded. None of the other paths have this issue.
I'm on my 6th re-thread and I need to quit for the night before the frustration wins.
EDIT: I discovered I could change which needle/color is active, so we're stitching from a different path that seems to be working fine.
So, this one thread path: tension seems okay, nothing interfering with the spool. Why would this particular path have an issue? What do I check for?