Question about Brother LS-2125 Mechanical Sewing Machine

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I keep getting loops (from the upper thread) on the bottom of the fabric I'm sewing. I thread the needle with the foot up and changing the tension doesn't make any difference. I'm using the correct unbent needle and correct thread. I can't make it sew properly at all.

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Try a different bobbin and make sure bobbin is inserted correctly. mine has done that before and I had the bobbin in backwards

Posted on May 14, 2010

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Posted on Jan 02, 2017

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I am using the walking foot for a quilting project that I am working on, however, the bottom stitching is just looping and can just be pulled away from the fabric.


Be sure you are using a brand new needle.

Remove the thread from the machine.

ALWAYS RAISE THE PRESSER FOOT and rethread the upper thread from the beginning. Make sure the thread path is correct.

Verify the bobbin is installed and turning the correct direction in the bobbin case and that the bobbin thread is threaded through the bobbin tension mechanism.

Set the upper tension to the midway point between high & low number--this may require some adjustment for your particular machine.

Pull the bobbin thread to the top of your sewing project before beginning to stitch.
How and Why to Bring up the Bobbin Thread

Re-test your machine on a scrap quilt sandwich (make sure the walking foot is installed correctly and that the presser foot is lowered when beginning to stitch).

Consult the owner's manual for instructions for presser foot pressure. The pressure may need to be adjusted because you are dealing with a sandwich that is thicker than regular fabric.

You may also try changing the type and size sewing machine needle you are using. Using a Top Stitch or Microtext needle will help the needle to penetrate the fabric sandwich easier. A Top Stitch needle has a larger groove to protect the thread as it pierces the fabric which helps prevent looping.

Also, verify the thread is not too small for the needle's eye.

All About Needles

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwil1tu2mb3PAhVR6mMKHUlvB_4QFggoMAE&url=http%3A%2F%2Fwww.schmetzneedles.com%2Flearning%2Fpdf%2Fschmetz-needle-chart.pdf&usg=AFQjCNHTR52AmqwzvyCjbXmD5Ch52Va5_Q&cad=rja

Oct 02, 2016 | Sewing Machines

2 Answers

Back side of stitches are loose


increase the thread tension of the needle thread
this is an indication that the tension is not enough to pull the bobbin thread up tight

Jun 15, 2016 | Sewing Machines

1 Answer

How to adjust tension?


Consult the owner's manual. Be sure to always RAISE the presser foot when threading the upper thread.

Test the stitch. If the thread is looping under the fabric, the upper thread tension is too loose. If the bottom thread shows on the top of the fabric, the upper tension is too tight. The tension is correct when the two threads (top & bobbin) meet in the middle of the fabric.

NOTE: when you change needle/thread/fabric, the tension should be tested on a piece of the project's scrap fabric and readjusted before beginning the project. Tension is static and should be adjusted every time a project is changed. (One tension will not work for every project, so get comfortable with tweaking.) Be sure to change needles frequently (damaged needles are an inexpensive fix for a lot of sewing issues). Making sure needle/thread/fabric are compatible is very important. All About Needles

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Mar 10, 2016 | Sewing Machines

1 Answer

How do I adjust the tension for straight sewing?


First, be sure you are using a brand-new needle and that the needle, thread, and fabric are compatible.
All About Needles

When you thread the upper thread, be sure the presser foot is ALWAYS RAISED so the thread will seat properly in the tension disk. Also, confirm that the machine thread pathway is correct.

Remember that when fabric types/weights are changed, the needle/thread should be changed accordingly. (Needles should be changed often to attain the best sewing experience and minimize unnecessary frustration.) The tension may also need to adjusted. Tension is not static. It should be adjusted to fit the project being sewn. Unless one continuously sews with the same fabric, thread, and needle type would the tension adjustment remain at the same setting, but machines do change over time so a tension setting that worked last year may not look the same this year.

The factory standard tension setting is the midway point between the high & low numbers. However, please understand that machines vary and that sometimes this standard setting may change with time and use. The midway point should only be the beginning point and is most likely suitable for medium-weight fabric. Also, usually the bobbin tension does not require frequent adjustments unless a particularly heavy- or light-weight thread is used in the bobbin--sometimes the bobbin tension will get out of whack requiring adjustment (consult the owner's manual or search the internet for instructions for adjusting bobbin tension). In the majority of cases, the tension adjustment is made to the top thread.

Test your straight stitch on your fabric (may be helpful to use a different color thread in the bobbin so it is easier to see any tension issues). If the bobbin thread is popping up to the top of the fabric, loosen the upper thread tension. If the upper thread is looping or showing on the bottom of the fabric, tighten the upper tension. Keep adjusting until the upper and bobbin threads meet in the middle of the fabric.

FWIW, the same process would be used for zig-zag stitching. Just make sure that the tension is not too tight or it will cause the fabric to pucker (or tunnel).

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Mar 07, 2016 | Sewing Machines

2 Answers

Cant get my bobbin in right position it keeps knotting up on inside of fabric


Top thread problem, Not enough tension on top=loops on the bottom of the fabric; too little tension on the bottom = loops on top of the fabric. Yes, I know it seems backwards. See: http://www.picturetrail.com/sfx/album/view/22521551
Dollars to donut holes, you either threaded the top of the machine with the presser foot down (it has to be UP to let the thread into the top tension), or you're trying to sew with the presser foot still up (which is an issue common to people trying to sew bulky seams).

Take the thread off the top of the machine, take out the bobbin case and give the machine a cleaning, rethread the machine, fetch up the bobbin thread and hold the bobbin and top thread ends together under and behind the presser foot for the first 2-3 stitches of each seam.

Jan 26, 2014 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

I keep getting loops (from the upper thread) on the bottom of the fabric i'm sewing. I thread the needle with the foot up and changing the tension doesn't make any difference. I'm using the correct, unbent...


The machine will need to go into the shop as it appears the timing needs to be adjusted.

If you are mechanically inclined, you can find a tutorial and graphic at sewusa.com for adjusting the timing.

Mar 20, 2010 | Brother LS-2125 Mechanical Sewing Machine

2 Answers

My bobbin thread is making big loops


Bottom looping says upper tension problems (too loose). Rethread it making sure the presser foot is up so the thread is inbetween the tension discs.

Dec 11, 2008 | Bernina Bernette 75

2 Answers

Fabric feeding, then jamming


Hi,
If you are getting loops on the bottom side of your fabric then it is a TOP tension problem, usually the thread is not between the tension discs.
Here is a simple check: Thread the upper path and stop short of the eye of the needle. Drop the presser foot. Now if you pull on the thread you should feel the drag of the tension discs. Increasing the tension setting should make it harder to pull. Now while your pulling raise the presser foot. All tension should be gone and the thread will pull thru easily.
I have worked on a few Hello Kitty machines and usually there is a single screw to remove the nose cover, exposing the needle bar and slack arm assembly. The slack arm does just that, it takes up the loop and the tension discs keep it from pulling more thread off the spool. Look for some thread wrapped up in the mechanism and clear it if you can.
This is were I find most of the problems
Good luck!

Mar 29, 2017 | Janome Hello Kitty 11706 Mechanical Sewing...

1 Answer

Kenmore sewing machine older model 1345381


hi! there wind thread on bobbins winder 4 times by your hand rotate clockwise,insert in shaft bobiins winder on top of your machine near hand wheel push latch to engage loop thread on disc winder tension start your machine on pedal foot automatically winder disengage if already filled up of thead pull this winder and insert to bobbins casing insert thread to slot and pull out winder 6411c87.jpgshould rotate clockwise as shown.insert on shuttle hook casing and close cover needle plate.next thread your upper

97b52e8.jpgthreading tension as shown on red threading from spool pull threading and loop to dial tension threading and insert thread to lever needle and to needle hole tip. pull tread under the needle foot and feeder tooth.rotate hand wheel counter clockwise to hook up thread bobbibs and appear at top of needle plate,teo thread shoul appear,set dial tension to # 3 and stich to # 8 range to # 12 depend on fabric and layer of fabrics and set on straight stich sewing,let needle on upper position insert fabric for trial sewiing.put down foot needle lever. manually by hand rotate for assurance needle is free to sew if obtruction on loop bobbins thread occurs adjust all tension gradually then try again until free from sewing w/o problem star sewing.

Aug 08, 2008 | Kenmore Drop-In Bobbin 505S-21BH...

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