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Upper thread keeps breaking

; and there is a "nesting" with the Upper Thread and Bobbin..what is going on? I cleaned the bobbin/area, changed my needle, and anything else i could think of.

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Sounds like it's the thread. If you use a thread that is old (even if it's never been used) you will find that it can continuously break even if it doesn't break from the bobbin. You may also be using the wrong kind of thread. If changing to a new spool doesn't work, you may need to adjust the tension.

Posted on Jan 02, 2014

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Posted on Jan 02, 2017

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SOURCE: Not picking up the Bobbin thread

I cleaned the machine good with canned air, oiled it. I took out the bobbin case and cleaned it good also. I then noticed the tension screw on the bobbin case was loose, tightened it and the problem was fixed.

Posted on Nov 17, 2008

  • 3 Answers

SOURCE: Not picking up the Bobbin thread

Sounds like you have to take off the throat plate and clean out threads under it.  Sometime they ball up and prevent the needle from going down and catching the bobbin thread. You can't see themuntil you take off the plate.  Follow the directions.  It is easy.

Posted on Mar 07, 2009

kent581
  • 87 Answers

SOURCE: Upper thread knots up with bobbin thread when sewing a stich

Thread test
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Step 2:
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
Tension:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes.

Posted on Mar 18, 2009

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Bernina activa 130 tension loose after needle breaking into bobbin area


Is it the bobbin tension that is very loose? Try tightening it. Also check that the bobbin has been installed in the bobbin case, turning the correct direction and that the bobbin tension is threaded properly.

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If it is the upper tension that is loose and creating "thread nests" under the fabric, the machine is either misthreaded or possibly the thread is not seated completely in the tension disk.

Remove the upper thread from the machine.
ALWAYS RAISE the presser foot and rethread the upper thread from the beginning--verify the thread path is correct.
Set the upper tension to the midway point between high & low number (the factory standard--although it may need tweaking later for your particular machine).

Retest your machine. Hopefully, the issue has been resolved. If not, it may need service.

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I have a Baby Lock Audrey. The bobbin thread is "nesting". I have tried rewinding the bobbin and rethreading the needle and bobbin thread but that hasn't helped.


Check that it is actually the bobbin thread that is nesting. Generally, bobbin thread issues appear on the top of the fabric and upper thread issues appear on the underside of the fabric.

If it is in fact the bobbin thread, the bobbin thread tension may be off or malfunctioning.

If it is the upper thread nesting under the fabric:
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You might try cleaning the tension disks by dampening a length of pearl cotton with rubbing alcohol, open the tension disk all the way, raise the presser foot, and then pull the pearl cotton down between the disks a couple of times.

Clean away the lint and thread pieces from the feed dogs and bobbin area. Oil your machine according to the instruction manual--use only fresh good quality sewing machine oil--only 1 or 2 drops of oil each place.

Install a brand new needle. Make sure you are using a needle and thread that are compatible with the fabric you are sewing--that the thread is not too big for the needle's eye, etc.
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Make sure you RAISE the presser foot BEFORE threading the upper thread. Rethread the thread from the beginning checking that thread is not wrapping around the spool pin or catching somewhere in the threading sequence.

Verify that you are threading the machine correctly. Misthreading will cause havoc and frustration!

Do not use old or bargain bin thread--Coats & Clark does create problems for some machines.

You might try pulling the bobbin thread to the top before beginning to sew. This helps prevent some of the thread nests you are experiencing.
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The factory tension setting is usually the halfway point between the high and low number. This is where you should start testing your tension. Once you sew a sample, if the top thread is looping/knotting (bird nesting) under the fabric, the upper tension is most likely too loose. If the bobbin thread is pulling to the top of the fabric, the upper tension is too tight. Get used to adjusting the upper tension every time you change fabric, needle, thread. The upper tension is not meant to be static, so don't be afraid to adjust to achieve the proper tension.

Ideal tension is when both the upper thread and bobbin thread meet in the middle of the fabric.

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