Why is my bobbin bird nesting?
Bird nests occur when thread bunches up underneath the needle plate, causing broken threads, skipped stitches, or uneven tension. This is typically caused by the top thread not being threaded correctly or a sewing machine tension issue.
Why does my fabric bunch up when I sew?
Tension pucker is caused while sewing with too much tension, thereby causing a stretch in the thread. After sewing, the thread relaxes. As it attempts to recover its original length, it gathers up the seam, causing the pucker, which cannot be immediately seen; and may be noticeable at a later stage.
Why is my sewing machine grinding?
Clunking, Grinding, Banging Noises
Whatever you do, stop sewing! Those noises are a signal that something is jammed or rubbing. … Even if the machine had been sewing along just fine, a tiny bit more lint or a single thread can be the “thread” that “breaks the camels back”.
What tension should I use for thin fabric?
Use size 70/10 for really thin cotton like voile, size 80/12 for light to medium weight cotton, and 90/14 for thick cotton like denim.
Why does my sewing machine keep jamming underneath?
However certain you are that the problem with the machine is most likely due to a huge tangled mess of thread in the bobbin underneath the fabric, the most common reason for the jamming is usually the lack of sufficient tension in the upper thread.