Well, some of the answers are quite right to an extent, but you need to know which thread is bunching up. Usually if it's thread bunching up on the bottom, believe it or not, it is the upper thread that is the culprit. What's happening there is that the thread may be going around the bobbin, but it isn't being pulled up to make a tight, delightful little lockstitch. I've put a link in to a discussion that shows in graphic format how a stitch is formed, as this will help you understand.
When symptoms like the ones you're experiencing happen, the first thing I'll look for is if there's something that is keeping the upper tension discs from doing their job. It could be that bane of sewing machines, lint. If there's lint in between the disks that's as bad for your machine as plaque between your teeth, and the solution is similar. Floss it. Get some dental floss, UNWAXED, and use it to clean out those tension disks. After this, make darn sure that you have the presser foot up when you thread the machine (and I mean, every time) because when the presser foot goes up, it acts also as a release to the tension disks. They open, you can cozy that thread down into them, and they will be where they are given the tension.
The second thing I'd look for is if the little spring on the upper tension is working, Have you ever gone fishing and got a nibble? Sometimes you give a little jerk to get the hook set in the fish. Your sewing machine is like a fisherman, every time the upper thread circles the bobbin case, the little spring on the upper tension gives a jerk to bring the upper thread back up to form a nice, tight lock stitch. If the spring isn't working, then this can also help those thread nests to form.
Check these things out.
Finally, to demystify tension altogether, go to the second link I've listed, read and print out the man's directions. Although it is for the delightful featherweight machine, it is advice that should apply to any sewing machine with a lockstitch.
Conquer your tensions and you'll have stress free sewing.
2007-07-15 08:17:10
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answer #1
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answered by adonnaleota 2
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Sounds like "bobbin" tension. Take the thread that comes out of the bobbin, hold it shoulder high, give it a slight jerk, not to much, the thread should drop the bobbin about one inch, that's the tension that should come out of the bobbin, if it's tight, then loosen the screw about one eighth turn and try it again, continue.
Then check your tension throughout the machine. Clean and oil.
Check your thread, with today's fashions I find there's different thread diameters, I always use "Clark" and a standard thread from Wal-Mart. The diameter can throw it off. Make sure your needle is the right one. The same goes for the needle.
2007-07-13 22:52:40
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answer #2
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answered by cowboydoc 7
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Usha Sewing Machine
2016-11-09 20:13:21
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answer #3
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answered by Erika 4
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There should be a wheel or gauge with numbers on it, that is your tension...depending on your thread, is where the tension should be set. The numbers on your tension should be numbered from 1 to 9... set your tension a little over 4.. and just experiment from there...use a scrap to test your tension. if it keeps bunching up, then readjust. Also, have you cleaned the area where the bobbin goes?
2007-07-13 22:47:22
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answer #4
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answered by Pebbles63 3
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All the other suggestions are great, but if they fail to remedy your problem check the bobbin itself. My machine nearly drove me crazy doing what you described. Upon close inspection of the bobbin I found a very, very, tiny nick that was apparently causing the thread to catch. I changed the bobbin and that solved the problem.
2007-07-13 23:36:35
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answer #5
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answered by EvilWoman0913 7
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Sounds as though the bobbin tension is not right
You are using exactly the same thread top and bottom?? Mixing threads causes this sometimes.
Do you have enough tension weight on the fabric if its something very light?
2007-07-13 22:24:52
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answer #6
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answered by Sal*UK 7
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2014-09-19 09:32:51
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answer #7
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answered by Anonymous
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Sounds like a tension problem. Adjust the tension +-.
2007-07-14 06:04:51
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answer #8
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answered by ? 2
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tighten the tension on the thread/bobbin
2007-07-14 13:49:02
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answer #9
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answered by dtwladyhawk 6
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rethread your spindle sounds like you havent done it right i dont think it needs repaired
2007-07-13 22:28:39
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answer #10
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answered by patricia.quigley@btopenworld.com 2
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