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Bottom tension to tight

Stiched seam is not balanced the bottom tension is to tight. How to adjust...If I tighten the top tension, it puckers the vinyl.

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  • Anonymous Mar 22, 2014

    tension is too tight

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I found that sewing this type of fabric you should not have any pressure on the presser foot. and the top tension should be looser but note the tension before you adjust. and remember to make sure the needle is the right size for the fabric. and since wer are not to change the bottom tension because it always right?? then you may have to make the seam stitch longer good luck

Posted on Mar 08, 2009

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There's hardly any way to significantly adjust the bottom, or bobbin tension. There's just a small, flat spring attached to the side of the bobbin case, under which the thread runs. There's adjustment there. You need to adjust the top thread tension via the small thumbscrew that's against the plates on the top thread tension discs. Increase or decrease tension there until top and bottom threads are equally centered between layers of material.
You can adjust presser foot tension with the knurled nut at the top of the machine. I never had the kind of problem you mention though. I set my machine at about 6 stitches per inch or a little more (max is 5, recommended), and presser foot tension is only heavy enough to pull a single layer of material through.
Hope this helps.

Posted on Jul 13, 2009

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2 Answers

What to do if sewing machine is puckering?


Depends on why the seam is puckering. Read this: http://www.amefird.com/wp-content/uploads/2010/01/Minimizing-Seam-Puckering-2-5-10.pdf
Offhand, it sounds like you need to reset the top tension properly.
http://quilting.about.com/od/piecingtechniques/a/How-to-Adjust-Sewing-Machine-Tension.htm
The top two photos here are the upper and underside of a single ply of muslin sewn with a balanced tension. The blue thread is on top, red in the bobbin: http://www.picturetrail.com/sfx/album/view/22521551 -- that will give you something to shoot for.

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How to set bottom and top thread center of material


Hello
It sounds like you are trying to balance the top and bobbin thread so it locks perfectly. If so, this is accomplished by balancing the thread "tension". If you see loops on the underside of the fabric, tighten (increase) the tension. If loops for on the top, lower the tension.

If the fabric is puckering: reduce the stitch length AND you may need to use a finer needle along with finer thread in the bobbin and on top.

Presser foot pressure is rarely adjusted, unless sewing with extremely variable fabrics. For example, pressure is lowered when sewing with silk chiffon as it transports easily under the presser foot (and to prevent damage to the fragile fabric). Whereas pressure is increased when sewing with tent canvass to allow the feed dogs to be able to 'grip' and move the fabric.

Happy Sewing!

Jun 07, 2014 | Husqvarna Viking 1

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The top stich is loose on my Janome Harmony 8100, I have cleaned and changed bobbins, but nothing seems to help.


Ok, Let's understand exactly what is going on. You said. "the top stitch is loose." So that we are clear....do you mean that you are getting loops on top of the seam? Or do you mean that you are getting wiggly stitches on top and small loops on the bottom of the seam? It's important to know... Because loops underneath means the top tension isn't right. Maybe you didn't thread with the presser foot in the UP position... or your tension is dialed too low.

Now, if you are getting loops on top of the seam... that means the top tension is too tight. Loosen the top tension. Make sure your bobbin is inserted correctly. If loosening top tension isn't enough, you may have to tighten the tension screw on the bobbin case/ or bobbin carrier.

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On my bobbin side of the materal after i sew its just tons of thread on that side and the stitch is not tight


Loose on bottom indicates trouble with top tension. Re thread your machine with the presser foot UP. sew a test seam. If you still have problems adjust the top tension. sew a test seam. If you still have problems clean between the tension discs with some sturdy fabric and unwaxed dental floss. Sew another test seam.

Still problems? Wind the top tension tight then back off 1/4 turns until the seam is balanced.

Aug 16, 2012 | Janome Sewing Machines

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I have a Singer


Which stitch are you using?

To check thread tension for straight stitches, use different colors of thread in your top thread and bobbin. If the top thread shows on the bottom of the fabric, turn the dial counter-clockwise (towards a lower number). If the bottom thread shows on the top, turn the dial clockwise. Do not adjust the tension too much (for example, go from 2 to 2.5 if increasing the tension) at a time; test another set of stitches. Alternatively, you can adjust the bobbin tension in the reverse directions. However, it's very easy to damage the set screw in the bobbin case so do this as a last resort. Since this is a vertical bobbin case, put the bobbin in and hold onto the thread. If the thread moves when you dangle the bobbin case, tighten the screw. Loosen the screw if the thread doesn't pull out of the bobbin when you hold the unit.

For zig-zag decorative stitches lower the tension until the puckering stops. Usually the top thread will show on the bottom of the fabric.

If the tension is not changing when you turn the dial, make sure that the presser foot is down. The sewing machine may need repair. The tension mechanism depends on a spring and that can break. See the Singer site for a parts breakdown and contact your Singer dealer for the parts.

If the top and bottom fabric are not moving at the same rate, you can get a different type of puckering. You may want to get an even feed foot if there are several layers of fabric.

The manual for the 3116 is available from Singer: http://www.singerco.com/uploads/download/438_3116.pdf .

I hope this helps.

Cindy Wells

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1 Answer

The bottom stitch is very loose. I've tried tightening and loosening the screw and the problem remains...HELP!


The bottom stitch is affected by the TOP thread tension :) First go back and make sure your bobbin tension is correct since you adjusted it. It should drop slightly when held suspended by danging it by the thread. If it reels out to the floor it is too loose. If it doesn't drop at all it is too tight.

Now that you have that adjusted look at your top tension. If it is loopy on the bottom side of the stitch the TOP tension is too loose. Increase the top tension.

Now take some scrap material and set machine to a wide zig zag, medium length stitch and sew a bit. Compare the top and the bottom sides of the stitch. They should look identical. Remember the TOP side effects the bottom and the BOTTOM tension effects the top side. Adjust accordingly until they look identical with no loose threads or loops and no puckering (puckering means it's too tight).

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1 Answer

Top stitche is to tight and bottom stitche is to loose


Meaning you have adjusted the tension for the top thread as well as the bobbin?

Use two distinct colors of thread - one for the top and one for the bottom.

Thread the machine with the presser foot up.

The two threads should meet in the middle of the stitch with neither obvious on the opposite side of the seam.

Set the top thread tension to 4 and adjust the bobbin as needed.

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How do I adjust tension top thread too tight bottom


The bottom tension is too loose. If your bobbin is in a case there is a little screw on the side that will tighten the plates and increase the tension. Test your thread coming out of the case as you slowly make adjustments to the screw. A slight bit of resistance is what you want. If your sewing still puckers you may have to loosen the tension on the top. Sew on a scrap and go toward the smaller numbers to loosen the top tension until the stitches meet between the two layers of fabric.

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Good luck and please rate me.

From White Sewing web site.

"Are wavy fabrics making you seasick? Do puckers leave a sour taste in your mouth? Then you need differential feed. It eliminates distortion and wavy seams when serging knits, plus it prevents puckers and pulled seams on lightweight fabrics. Turn the dial again for instant gathers.

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