My machine has started bunching up tons of thread from the bobbin while sewing a straight seam. I have tried several different bobbins, same result. Not sure how to adjust bobbin tension on this machine. HELP!
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Look at your seam. If you have a bunch of balled up thread underneath the seam, part of the problem is operator error. Always always grasp the thread end while beginning the seam. I suspect that the thread gut bunched up under the material and caught up in the bobbin/shuttle area.
Remove the fabric, unplug the machine... get into the bobbin area, remove the bobbin, and if necessary clean threads caught up in the bobbin race/shuttle. reassemble and replace the bobbin... turn on the machine. Try again.
try changing the needle make sure the bobbin is turned the correct way in the bobbin case make sure the thread has not come off the thread take up lever clean under the needle plate and in the bobbin area for lint
try changing the needle--use a needle according to the fabric being sewed if thin fabric is being sewed try using a stablizer rethread the machine top and bobbin--use every thread guide make sure the bobbin is inserted correctly and turned correctly in the bobbin case also try adjusting the top thread tension just a little
Usually problems like this are caused by improper bobbin winding and installation, incorrect tension, the wrong needle for project, or simply not grasping the threads and gently pulling them backwards when you start a seam.
1. Make sure you are threading the machine correctly. 2. Check your tension. 3. Check the bobbin, make sure it's wound properly and that you don't have the bobbin in upside down. 4. Check for bits of fluff and thread in the bobbin race area. 5. Change your needle, they wear out, get bent, dull... etc. You should have several different types on hand at all times. 6. Grasp both the threads gently and pull slightly backwards when you begin a seam. this will assure that your bobbin thread doesn't get all bunched up under the fabric. 7. Always test tension, needles etc., on a scrap piece of fabric before you begin sewing your project.
"Birdnesting" occurs when there is no tension on the needle thread to pull the bobbin thread. This is easily corrected by rethreading the machine, following the threading path carefully and making sure the thread is fully engaged in the tension mechanism.
* Un-thread your machine and remove your bobbin. Clean any loose thread or lint out of your bobbin case. Re-thread your machine, reinsert and re-thread your bobbin.
* Change your bobbin There could be a nick along the edge of your bobbin spool that’s catching your thread as you sew.
* When you start to sew a seam, grasp the upper and bobbin thread tails. Hold them back and out of the way as you sew your first couple of stitches. This will keep them from getting caught in your machine.