Bobbin thread bunching

bunching of thread under the material is an indication of insufficient tension of the needle thread
increase the needle tension until the threads meet at the center of the materialbeing sewn

The tension on the bobbin is too high, or the tension on the top is too low. One needs to set them to balance
Bruno

Try these suggestions

1. Change the needle--use a needle that's for the fabric being sewed

2. Rethread the machine--top --make sure to use every thread guide

3. try a different bobbin--make sure bobbin is inserted correctly into the bobbin case, & make sure the bobbin is turned the correct way in the bobbin case

4. make sure the thread has not come off the thread take up lever

5. Clean under the needle plate & in the bobbin area for lint or threads

6. Also could be a timing problem, and the machine would need to be checked.

Try these suggestions
1. Change needle
2. Rethread the machine--top --make sure to use every thread guide
3. Take the bobbin out --make sure it is inserted correctly into the bobbin
Case, & make sure the bobbin is turned the correct way
4. make sure the thread has not come off the thread take up lever
5. Clean under the needle plate & in the bobbin area for lint or threads

Thread the machine with different color thread for the needle and the bobbin, then see which color is bunching up.Ill bet it is the top thread.

Hi Lou! This sounds like a tension problem--the tension on the top thread is too loose. Try using different color threads on the top and bobbin, then carefully rethread everything. Stitch a couple of inches and check the underside. If the top stitches look fine and the bottom ones are loose and loopy, and with the pressure foot down, tighten the tension. Move the knob or dial (whichever you have) just a little bit. Sew a couple of inches more, and recheck. Continue to sew and recheck, gradually tightening the tension, until you see little if any bobbin thread on the top or top thread on the underside of the fabric.

Let me know if this helps, ok?


Robbie

Hi!

I think you are threading the top of the machine incorrectly. Make sure that what I'm saying is correct, use two color threads to sew with- and you will see that it is in fact the top thread that is bunching.

This might be a tension problem. Could be the bobbin is not threaded in the case right. First, check the threading of the bobbin and then check the stitch.

Next, adjust the tension on the bobbin case. There is usually a small screw on the case that can be tightened or loosened. I think you may need to adjust it a bit or adjust the top tension knob, just a small bit at a time. It the top does not change the stitch, then go to the bobbin case and adjust the screw to tighten the stitch a little bit more.

Please do rate this solution as FixYa and revert for further assistance.

Thanks
Rylee

Needle in correct? Be sure your bobbin is not in upside down and turning the wrong way. Possibly the hook that the bobbicase fits in/on has been hit by a needle and caused a burr that is catching the thread as it comes around. The burr would have to be polished off or hook replaced. The machine could be slightly out of time also.

This could either be due to the bobbin being wound too loosely, or the tension on the top thread is too loose. This just happened to me the other day, and I thought it was the bobbin thread, but then I put another bobbin in with a different color than the top thread (this is a huge help in diagnosing thread issues), and I was surprised to find that it was actually the top thread that was a big loopy mess on the underside of the fabric. I fixed it by tightening the tension on the top thread (quite a bit), and everything was fine.

Try putting a new sewing machine needle in and make sure the eye of the needle is facing the right way. Needles look like they should go just anyway, but if they aren't in right, it could cause the problem you are having.