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The bottom bobbin thread bunches up (large amount of thread crumpled together in clumps) while the top thread looks fine

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When I had that happen, it was in my top threading, somehow the top thread had jumped out of a guide so it did not have the right tension. Totally rethread with a fresh needle and see if you have the same problem. Good luck.,

Posted on Oct 03, 2010

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It just started sewing upside down it was fine earlier, I have just rewound the bobbin


1. You will likely need to adjust the bobbin tension. Make sure that you have placed the thread under the tension spring to start with.
2. If it is bunching up on the bottom your tension on the bottom is too strong. Before you do anything you can increase the top tension to offset this so you won't need to mess with the bobbin if it isn't a great amount.
3. JUST FOR INFORMATION: When you change threads they are either thicker, thinner or the same. This will require most of the times to adjust the bobbin.

SEE BOBBIN ADJUST:
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25783479-nw4ivdpvgv5foeuvsdqznv2t-5-2.jpg

Jul 14, 2015 | Singer One Plus Computerized Sewing...

2 Answers

How to fix bobbin thread on computered memorycraft 9000 sewing machine ?


1)Check that your bobbin does not have a nick in it where the thread can catch and won't feed smoothly.2) make sure the upper and bobbin threads are the same.3) pull out the bobbin case and chect to see if there is a clump of lint.4) make sure the feed dogs are moving the fabric through smoothly,some fabrics can get caught on the dogs and make the bottom thread get loopy.5) check your needle,if it's bent or has a bad tip,it can mess up the stitch.

Aug 15, 2014 | Janome Memory Craft 9000 Computerized...

1 Answer

The stitching is not right. It looks fine on the top of the fabric, but bunches up on the bottom


Looping or bunching on on the bottom is a result of problems with the TOP TENSION.
Rethread the upper thread and adjust tension. Try again.

Jul 05, 2012 | Brother CS6000i Computerized Sewing...

2 Answers

I am sewing scout badges on a uniform and when I sew there is a bunch of needle thread bunched up on the bottom (the top looks fine). And the needle thread gets all caught up around the bobbin.


Clean out the bobbin area if there are any thread tangles there.

Refer to the maintenance section of the manual - see the configuration of the bobbin case and shuttle race? The bobbin case as an extending arm and the race a notch. When inserting the bobbin case into the shuttle, turn the handwheel so the needle is at it's highest position. Then lift the lever on the back of the bobbin case and insert the cast into the shuttle, arm pointing straight up toward the bed of the sewing machine.

Now thread the machine with the presser foot up - always - and see if the tangling stops.

When you forget to lift the presser foot before threading the machine, the tension control does not open to capture the thread. Then when you begin to sew, the top thread has no tension, and the bobbin thread, which does have tension, pulls the top thread to the bottom in messy loops.

Jun 25, 2011 | Kenmore Sewing Machines

1 Answer

When I sew the top stitch is fine butthe bottom sometimes looks like a 3 sided box and sometimes bunches up. I have tried to adjust the tension. How can I fix this?


Check the bobbin tension and that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder.

Feb 24, 2011 | Singer Sewing Machines

2 Answers

Bunching and Looping (Bobbin Side)


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.

Jun 16, 2010 | Brother CS6000i Computerized Sewing...

3 Answers

Bobbin thread bunching up.


Thread the machine with the presser foot up and see if this will remedy the problem.

If not, refer to the manual to be sure the threading and bobbin are set up as they should be.

If the bobbin thread and top thread continue to not link together, it could be the timing needs to be adjusted.

In this case, take the machine to a Brother dealer for service along with a sample of the stitching.

Apr 01, 2010 | Brother XR-65t Mechanical Sewing Machine

1 Answer

THREAD GET BUNCHED UP UNDERNEATH THE FABRIC, THE STICHES SEEM TO BE INCOMPLETE THE TOP LOOKS GOOD THAN I TURN IT OVER AND THE THEAD IS BUNCHED AND LONG LOOPS OF THREAD ARE LEFT. THANKS LOU


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

Jan 27, 2010 | Singer Sewing Machines

1 Answer

Bottom of stitch is bunched with alot of thread and machine jams


Try these time savers:
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.

Mar 17, 2009 | Singer 3116 Simple

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