HOW DO I ADJUST BOTTOM TENSION
SOURCE: Singer 8280 lower thread tension not consistent and not even
clean the lint out with canned air (best thing going) then I hope the tension is still back to where it was.never change this with out going back to the first setting and keeping it noted so you know where the problem is not. try changing the needle it may be bent
SOURCE: Problem with tension on singer tiny tailor mending machine
Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.
Ensure that all is clean and free of lint and jams, this is the most likely cause....now for tension troubleshooting .......
This solution is for tension problems...if you cannot form any sort of stitch, the issue is quite different, so please let me know if you need a different problem solved.....
It is quite long, but just work through each section in order.
The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.
QUICK SUMMARY FIRST:
Ensure sharp new needle,
Thread guides and Bobbin are Clean & Clear of lint
Set Top Tesion to 4 ....then....
Balance Bobbin to suit.
TOP THREAD TENSION:
If the looping threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your projects).
IS YOUR NEEDLE SHARP ?
If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !
TOP TENSION & GUIDES:
Make sure that when you thread the machine the presser foot is up so the thread goes between the discs and not to one side, top tension between 4 and 6, and that you have threaded through all the guides, including the last one, usually on the needle arm, just above the needle clamp.
It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.
If tensions appear correct, and the thread is definitely in the channel between the discs, but still too loose and looping, try raising presser foot and remove your thread.
Now, with a 2" (50mm) wide strip piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or denatured spirit, gently insert the fabric strip and clean between the discs with a see saw / to and fro action.
In the worst cases, gentle use of a needle to pick & remove the jam may be necessary, but be very gentle and make sure the tension is set at Zero and the presser foot is raised, (to disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.
BOBBIN TENSION:
Far less common, but if the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension.
I would not recommend fiddling with bobbin tension without good reason, it may end up with missing small screws and spring pieces, however, you can take the needle plate off to clean
the hook race area (where bobbin case sits)
...this is just 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 is a significant amount of lint, use a vacuum and small brush to get the worst.
Then wipe all this area with a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit, especially if there appears to be fine dirty deposits....oil and lint combine to conspire against you.
If it seems likely that you ......really ....do .....actually .....need .....to adjust the bobbin case, first check there is no lint trapped in the metal spring where the thread is tensioned.
TOP LOADER:
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....
...the other screw at one end is holding it all together, so beware....it is not a tragedy to undo the whole lot and clean it, but very gingerly and lay the bits out in sequence and orientation, or you risk tearing your hair out !
FRONT LOADER:
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all
back properly.
FINISHING UP
GETTING THE BALANCE RIGHT:
When you are certain there's no trapped lint in top tension or bobbin, set the top tension to 4 and the bobbin tension to a point where you just begin to feel resistance.
Try using good quality thread of contrasting colours so you can more easily spot the changes.
Set your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5 etc) and sew a sample for a few inches and check the result.... adjust the bobbin tension screw very little at
a time, perhaps 1/16 of a turn.
You may find you are playing with this balance for some little while and if you are putting the needleplate on and off each time begin to think it cannot be correct to do this.....BUT....it is,
and eventually, you do get a "feel" for the correct tension and then it happens quite quickly.....as a user you won't be doing it very often unless there is lint built up (or are there small hands at work around the house !?!?!)
OTHER ISSUES:
If you live near the ocean as we do, salt air can play havoc with metalwork inside and out, so to help minimise this, keep a few small packets of dessicant (silica gel) in your machine
case....no case ? then make some sort of cover !
Same applies in any damp or humid environment, keep your machine dry and dust free.
Budget for a proper full service every couple of years (more often if heavily used) and if you don't use your machine for a few years, be aware that old oil will dry out and combining with
dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)
FINALLY, A WORD ON THREAD:
If it is worth spending the time, energy and money on making something that you would like to give lasting enjoyment......use quality thread, .......it may seem to cost a little more at the
time, but the results, ease of use and added longevity will be worth the extra, and as a bonus, your tension troubles may be fewer and further between, because there is a more consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks
bargainbox.com.au
SOURCE: singer 5050
Does your sewing machine create unwanted loops or does the thread snap on the top of your machine? Does it seem like your machine does not want to work with you? Your problems could be related to tension.
First off, I recommend putting a white thread in the bobbin and a black thread through the needle. This will be imperative as you will need this to learn which thread is your main problem.
When you sew, which thread is the one malfunctioning? Do you see loops of black, white or is the black snapping? This is how you will be able to pinpoint your problem for further analysis.
When you sew, which thread is the one malfunctioning? Do you see loops of black, white or is the black snapping? This is how you will be able to pinpoint your problem for further analysis.
If you see loops of black, your needle tension is too loose or your bobbin is too tight. First try tightening the main dial on your machine to a higher number. If that does not work, try using a small screwdriver to turn the screw underneath the bobbin-case in the front of your machine clockwise. Please remember that even a little turn can mean everything in your work. I recommend only turning it 1/4th of a turn each time you test it.
Now if the loops were white, it means your bobbin tension is too loose. Do the same as above, tightening the screw clockwise with a screwdriver. If it seems too tight, please do loosen it and try to find a happy medium between your needle thread and your bobbin thread.
If the thread snaps, your tension is too tight. Do the reverse of the above. Either lower the number on your needle if the thread is snapping or turn the screw on the bobbin-case counter-clockwise. Again, each little bit of the turning counts, so only turn it about 1/4th the way. It is always good to be extra careful.
Keep working with both until you get a nice even stitch. An even stitch means the black should be on the top of your fabric and white should be on the bottom. It is perfectly okay if you see a little speck of one on the other side.
If all fails, try putting two drops of sewing machine oil in your machine and let it run through for about five minutes. The mechanisms might be a little overworked and are having a problem with your machine.
It is good if you keep a lot of fabric scraps available in case you over oiled. You do not want to be working on a difficult project for your sewing machine only to spit some oil on it. Keep sewing on the fabric scraps until there is absolutely no residue from the oil. Putting any more that 2 drops as stated earlier might cause more problems than you expect. Always use the oil sparingly.
If none of the above solutions have worked and you feel frustrated by your machine, a local Sewing Repair Shop visit should only run you about $40 and is highly recommended for your machine. A professional can tell you if what’s wrong with your machine is fixable at-home or not. A full repair for older machines before working with them is highly encouraged.
SOURCE: bobbin tension is too loose
"Birdnesting" occurs when there is no tension on the needle thread to pull the bobbin thread. This is easily corrected by rethreading the machine, following the threading path carefully and making sure the thread is fully engaged in the tension mechanism.
SOURCE: sewing machine tension
Hi. The upper tension is too loose (even tho it looks ok). If the upper thread is too loose, it can't pull the bobbin thread up to properly form the stitch and you get those messy 'birds nest' on the bottom side of the fabric. I posted a Tip on Adjusting Tension--read that and adjust your upper tension.
Thanks!
Robbie
Testimonial: "Thanks! That does help. Now I'll have to find your tip on Adjusting Tension =)"
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