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Bobbin issues the bobbin thread is bunching up

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Check whether it is bobbin thread or the top thread accumulating under the fabric. Generally, if thread problems exist "under" the fabric, it is a top thread issue. If the problems exist "above" the fabric, it is a bobbin issue.

Sounds like a thread nesting (bird nesting) problem where the top thread is globbing under the fabric. Usually, this is caused by misthreading (confirm the thread path), the thread not seated in the tension disk (ALWAYS RAISE the presser foot when threading!), or very loose top thread tension.

Remove the thread. Raise the presser foot and rethread from the beginning. Check that the thread path is correct. Set the upper tension at the midway point between high & low numbers (this is the beginning point for tension and will most likely need to be tweaked for your particular machine).

Sewing Machine Thread Bunching Up Here Why

What causes Bird Nests Superior Threads

Birds nest under the fabric big loops of thread top side looks good...


Posted on Dec 11, 2016


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The bobbin thread is bunching up

hi Lois.
this is all i could find out.
Check Your Tension Settings. Looping underneath the fabric usually occurs when there is not enough tension in the needle thread to pull the bobbin thread. Sometimes thread bunching can be caused by something as simple as the tension dial being inadvertently turn.
or try this link.
or this one,
Sewing Machine Thread Bunching Up Here Why .
if you go to this link a little window might open up in the middle of the page just close the little window down.
or this.

The bobbin thread is bunching up Google Search

Dec 12, 2017 | Sewing Machines

1 Answer

When I sew I have thread bunching up underneath the fabric, I've changed needle size, thread, bobbins and cleaned out around the bobbin holder. I'm frustrated and out of ideas.

Easy peasy, once you know the problem and how to fix it. It's called "bird nesting" or "thread nesting" or what I refer to as thread "barfs."

Install a brand new needle.
Remove all the thread from the machine.
**ALWAYS RAISE** the presser foot and rethread the top thread.
Verify the top thread path is correct.
Install and thread the bobbin case, make sure it is correct.
Set the top tension to the midway point.

Now retest your machine. Birds nests gone? You may need to tweak the top tension because the factory standard changes due to age and use.

FWIW, problems appearing under the fabric are an issue of the top thread. Thread problems appearing on top of the fabric is a bobbin issue.

What causes Bird Nests Superior Threads

Birds nest under the fabric big loops of thread top side looks good...


Mar 25, 2017 | Sewing Machines

3 Answers

Thread bunches up into a knotted mess on bottom. Bobbin doesn't sit flat inside the bobbin case but spins with a tilt, lower on the left and higher on the right. Bobbin touches plastic cover plate.

Usually, thread bunching under the fabric is an upper tension issue. Be sure to ALWAYS RAISE the presser foot when threading the upper thread.

With the bobbin case operating at a tilt, there is something mechanically wrong with the machine. It may be best to take it for service.


Aug 30, 2016 | Singer 4411 Heavy Duty Sewing Machine

2 Answers

I have a singer prelude sewing machine - the thread started binding from the bobbin up - there were about 50 threads pierced through my test patch.

what you describe is thread bunching and is typical of the needle thread tension being too loose
adjust that right up, run a test sew and go from there

Aug 07, 2016 | Singer Sewing Machines

2 Answers

I'm having trouble properly threading my Elna 1010. Could you please help? The bobbin thread keeps bunching up and breaking

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

Jul 26, 2016 | Elna Sewing Machines

2 Answers

Thread jams when I sew.

Try changing the needle.
if not check your tension and make sure its not to slack

Jul 15, 2015 | Sewing Machines

2 Answers

Thread bunches up when replacing thread on bobbin

If the thread is bunching or tangling when winding a bobbin, check that you have properly threaded the winder. Especially make sure you are running the thread through the bobbin tension assembly.

Aug 21, 2014 | Singer 5050 Mechanical Sewing Machine

2 Answers

Bobbin Issues

On the bobbin holder, there is a tiny adjuster you should be able to undo or do up with fingernail or small screwdriver cotton should be firm when pulled by hand not to loose or not to tight.

Oct 19, 2017 | Sewing Machines

1 Answer

Thread bunching and bobbin winder quit

This sounds a lot like you've forgotten to lower the presser foot. (this leaves the tension discs open and causes serious issues below the material.) Double check that and if still having issues post again.

Nov 03, 2012 | Brother SE-270D Computerized Sewing...

3 Answers

Thread catching and bunching up in bobbin latch while sewing

I had the same problem where the thread was getting all bunched up on the underside. I took everything out and followed the manual concerning threading, then manually moved my right wheel to see if it would get bunched up. It took awhile, but I finally got it sew correctly again. I;m still not sure what was wrong with it. I have a singer 7470.

Mar 23, 2009 | Singer 132QRFB Mechanical Sewing Machine

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