Question about Sewing Machines
If the bobbin thread is tight, then its tension needs to be loosened. It should be flexible enough that the top thread can pull the bobbin thread up halfway into the fabric. The ideal tension is when both top and bobbin threads meet in the middle of the fabric.
Posted on Aug 12, 2017
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Posted on Jan 02, 2017
Check your tension disks, with your presser foot up, and the tension dial on zero. Sometimes a piece of cotton breaks off between the tension disks and then prevents the disks to work properly. Also make sure when you thread the machine, the thread does go through the disks and over the take up lever. After you threaded the machine, before putting the thread through the eye of the needle, lower the presser foot and while pulling on the thread with your left hand, increase the tension with your right hand. Do it slowly and you should feel in difference in tension. If this is the case, your machine should work fine.
Posted on Nov 30, 2007
SOURCE: bobbin tension
If the looping is happening on the underside, it is your top tension that is to blame, conversely looping on top is bobbin tension.........take a look HERE for detail on cleaning lint buildup.
Top tension should be set around the middle of the range, usually 4 - 6.
I would not advise playing with bobbin tensions, however, you can take the needle plate off to clean the hook race area (where bobbin case sits) ...this is good housekeeping, my wife does this every time she replaces the bobbin....just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint, if there appears to be fine dirty deposits, a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit will do the trick.
Posted on Jan 27, 2008
SOURCE: bobbin tension
This is an issue of your upper thread tension, so take a look at this generic tension solution
If you are in a pickle with your bobbin case, check top tension and bobbin case are free of lint, reset the top tension to 4, and adjust the bobbin tension to suit......some more detail on how to do that, is here
Posted on Jan 30, 2008
Welcome to FixYa!
Loose bottom stitches come from the top, not the bottom. Seems weird, but that's the way sewing machines work.
The dial tension should be set at the mid range and make absolutely sure that you have the machine threaded correctly. Both things will cause a sloppy bottom stitch.
If you find my solution helpful, I'd appreciate a FixYa rating....
Posted on Feb 01, 2009
SOURCE: janome straight stitch loose
I don't know if this is the right answer for any of you, but thought I'd put my 2 cents worth in. Often this can be the bobbin in backwards. It needs to unwind a certain way depending on the machine. I've heard a phrase for this: Mind your p's and q's which means some wind off to the right like a q, others to the left like a p. Mine has to unwind one way then be slipped backwards into a little slot or it does that loose bottom thread looping and bunching someone here mentioned. It seems everytime I get that problem I rethread the top thread 100 times before it clicks again and I remember it could be the bobbin thread. Either your manual will tell you the correct way, or you could experiment and try one or the other. Once you figure out whether you're a p or a q, mark it on your machien somewhere to remind yourself.
Good Luck and Happy Sewing!
Posted on Apr 04, 2009
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