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Top thread is knotting up on the bottom even if I switch out thread or bobbins. seclector is on A length is on 2 and width is on o

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Hello,

It sounds to me as if your top thread tension is too loose or your bobbin thread tension is too tight. The top thread is tangling underneath and is probably making big loops. Consult your owners manual on how to adjust thread tensions.

Good Luck!
Chris
glfi.com

Posted on May 23, 2011

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4 Answers

Trying to sew zigzag but the bobbin thread is showing up on top


1. Try to loosen the top tension first.
2. If this doesn't work remove the bobbin and tighten the bobbin.
3. The purpose of this is to have the top and bottom tension even. This is similar to a tug of war. Whichever way is stronger is where the knot will be going. You want the knot in the middle of the fabric.
4. Test your top tension by leaving the foot up. Pull the thread through back and forth. It should be easy. If it isn't you will need to adjust the tension mechanism.

There is a tension set document added to help you.
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May 16, 2015 | Husqvarna Viking Emerald 116 Sewing...

2 Answers

I have juki 1541industrial machine . It started sewing upside down . Instead of nice stiching on top show side it on bottom. Any ideas


This is caused by the tension between the bobbin and needle threads being out of balance. If the knots between the stitches are on the bottom side, then you need to tighten your needle thread tension a little at a time until the knot is in middle of fabric. The reverse of this is if the knots are on the top, then either your bobbin tension is too loose or your needle thread tension is too tight. If this occurs, then loosen your needle thread a little at a time to see if knot goes down in middle of fabric. If it does not, then you need to increase the tension on your bobbin thread. This done by taking bobbin case out and tighten the small screw located in the middle of the spring on the side of the case. You only need a slight, steady pull on the bobbin thread - the more you put on the bobbin, the more you are going to have to put on the needle thread.

Feb 13, 2015 | Juki Sewing Machines

1 Answer

Adjust tension


The tension of the top thread and bobbin thread are in a "tug of war". If the top is "winning" or too high then the bottom thread will be showing on the top of the fabric. If the top is "loosing" or too loose then the top thread will be pulled through the fabric and show a lot on the bottom. They must be evened out so the "tug of war" is even so the knot is in the middle of the fabric.
START WITH BOBBIN FIRST: Remove bobbin and bob from finger. When you have it adjusted right then the bobbin will extend one inch when you bob it. If you can't bob your bobbin you will have to make an approximate and replace. You may have to do this a couple times to get it right.
WHEN IT'S RIGHT: The bobbin and top tension are equal without being too much pull on both that causes the fabric to pull together.

Jan 31, 2015 | Sewing Machines

1 Answer

I had my machine in the closet for 5 years and now need to sew a hem on my cotton pants. What should the settings be set at? Right now it is at a 4 and the stitch length is a 2 1/2. The thread is too...


If your machine has been stored for 5 years, you should give it a good clean and oil according to the manual before you do anything else. Then put in a new needle and wind a fresh bobbin, checking that the bobbin has been wound smoothly as a badly wound bobbin can cause poor tension and stitching from the bottom thread.

You want the thread to go from the spool through a tension disc or eyelet to the bobbin and keep some gentle tension onto the thread spool using your scissors handle or similar so that the thread winds off it smoothly and the spool doesn't bounce around. Also give the thread a nudge with your finger tip as it winds onto the bobbin so it fills evenly, top, middle and bottom, not all in the middle.

Are you wanting a straight stitch to sew around the hemline? If so, your stitch length is right, but stitch width should be zero. You don't say what knob is set to 4, if its your top tension then that should be close, usually between 4 and 6 if dial goes from zero to 10.

Which thread is too tight? top or bottom. Firstly check the threading path to ensure that the top thread isn't catching on anything, is through the take up lever properly and coming from the thread spool without catching there. Some thread spools have a little knick in the top where you can catch the thread to store it, but you dont' want the thread to catch here when seaming, so turn it around the other way on the spool so it can't.

Try test stitching a medium zig zag stitch on scrap fabric, and you'll be able to see if the bottom thread is pulling in or the top one, then adjust the tension dial a little to lessen this.

Hope these pointers help, if you can't get a good neat stitch after trying these things, then consider taking it for a clean and service, the technician can get inside and clean the machine thoroughly and also check for any other issues that might be there.

Apr 30, 2011 | Singer 57815 Mechanical Sewing Machine

2 Answers

Bobbin thread keeps knotting


1. Do you mean that there are knots in the bobbin thread?
2. Is the bottom thread in your stitching looping and knotting.

If yes to 1. you need to rewind your bobbin fresh, and keep slight tension on the thread reel that you are winding it from. Put the handle of your scissors into the top of the reel to apply a gentle pressure while winding. Keep your eye on the bobbin as it winds and give it a nudge with a finger tip to ensure it winds the bobbin evenly top, middle and bottom.

If yes to 2, then you need to check your bobbin threading, is the thread even under tension. Is the bobbin tension set correctly. Break out your manual and revisit this to ensure it is set correctly.

Feb 27, 2011 | Brother XL-5340 Mechanical Sewing Machine

2 Answers

Singer 301a sewing machine does not sew for more than 2 secs...top thread just knots into a huge ball on bottom of fabric...everything is threaded correctly and all tension set well...next step is trash...


Recheck the top thread and bobbin tension for equal balance of thread when sewing. The knotting of thread problem is usually because the tensions are too tight or too loose and/or thread may not be properly threaded. Another reason is when the bobbin thread is wind imbalanced it will cause the thread to knot-up when sewing. This problem is notorious when the bobbin is winded within the bobbin case on some machines. The bobbin thread need to be wind smoothly in the bobbin to avoid this problem.

Jan 24, 2010 | Singer Sewing Machines

1 Answer

Sewing machine


The top tension pulls the top thread up. The bobbin tension pulls the bottom thread down. A balanced tension is an an even knot between the stitches.

If the thread is messy on the bottom, the top tension is non-existent or is too low. The top thread tension dial should be on 4 or 5. Pull the thread out and re-thread the machine with the presser foot up. If it is still messy, perhaps there is a burr on the bobbin case snagging the thread.

Jun 19, 2009 | Singer Drop-In Bobbin 758B-28BH Mechanical...

1 Answer

Bernina Aurora 440 knotting below my fabric and into bobbin area.


Are you sure you have the bobbin the right way round in the holder....when you look at the bobbin and tug the thread, the bobbin should move clockwise.
Pull out the foot pedal and use bsr2 with the start/stop button.
Bring bobbin thread to top of work before starting to sew. This may help knotting problem

May 25, 2009 | Bernina Activa 140

1 Answer

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.

Mar 16, 2009 | Sewing Machines

1 Answer

Bottom thread is too loose


try filping you bobbin around the other way and change out your needle

Jan 28, 2009 | Brother XL3750 Mechanical Sewing Machine

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