What causes birds nests? Was sewing just fine the jumble of thread under neath! Now nothing! No lint underneath rethreaded. I'm stumped. I appreciate all the help, suggestions and comments. I've only been quilting a few yrs, self taught starting with a book from 1960's and visually impaired, so can use whatever help I can! Thank you!!!

Usually when I have a birds' nests it's because I forgot to put the presser foot down...!!

Now what do you think causes a birds nest? Silly girl...its caused by a bird or birds collecting threads and twigs and things to make a nest so that they can hatch out some eggs!!!

OOPS....WRONG nesting. LOLOLOL I had to see if you were paying attention. So ARE YOU? lolol

The first thing I would do is clean the bobbin area really well, then rethread, also change the needle just in case.

On some of my machines, I have to hold the threads to start sewing or I'll get bird's nests. Make sure there is not a small thread caught somewhere in the bobbin race. Or than that, just cleaning it out might help.

Try pulling your bobbin out of the case - brushing out anything that may or may not be there.
Then re-install, making sure the thread is in the right direction.
Replace the needle and re-thread, making sure its in the right direction.
When starting out stitching, hold the "tails" for the first few stitches.

If that doesn't work, try a new bobbin.
Sometimes machines just get plain ol' persnickety.

P.S. This has happened to all of us at one time or another.
Okay.. at least it's happened to me!

Gremlins! Tiny little Gremlins!