Question about Sewing Machines

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My mums lemair Helvetia, when on zigzag only, mucks up every 4th stitch. It forms a thread loop on the underside. And what needle is the correct needle for this machine?

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  • Sewing Machines Master
  • 7,365 Answers

It's possible that the gear or cam that make the zig zag stitch is
worn or broken or loose, there's no way to know for sure with out
having a sewing machine shop look at the machine.
you mentioned the needle, when sewing on cotton you need one
kind of needle and for knits you need a different needle, so
according to what kind of fabric that tell what kind of needle has to
be used for the stitches to come out right.
also check the top tenison--on a scrap fabric,,try to tighten the top
tension and see if the helps stop the thread loops on the underside.

Posted on Nov 09, 2012

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SewExpress
  • 41 Answers

SOURCE: Stitches not forming!

Good Morning,

A few things to try:

  1. Loosen the needle screw, make sure the needle is fully up in the needle hole and re-tighten the screw. Vibration can sometimes cause the needle to slip...and the needle not fully inserted can cause this problem.
  2. Make sure the bobbin is turning the proper direction. If your machine has a standard bobbin case that comes out of the machine, turn the case so the bobbin is facing towards you. Pull the thread tail and make sure the bobbin turns clockwise. If it's turning counter-clockwise, flip it over and try your machine again. If your machine has a drop-in bobbin, double-check your particular machine instructions to make sure it's going the right direction (clockwise or counterclockwise depending on the machine).
  3. Make sure you have tension on the upper thread. Do this by lowering the presser foot (make sure the thread tail is NOT under the foot) and give the thread a tug. You should feel tension on the thread. If not, the thread isn't fully down in the upper tension disks. You should be able to give it a further tug to pull it down into the disks. No tension on the upper thread can cause the stitches to not form.
  4. If none of the above seems to help, you'll need to get your dealer involved (provided you purchased your machine from a sewing machine dealer). They can determine if it's just something happening during threading or if the machine is out of timing. They are there to help you before AND after the sale and should be willing to take care of whatever is happening.
  5. If you did NOT purchase your machine from a dealer, and the store you purchased from does not have a sewing machine technician, we would suggest that you return/exchange it for a new machine and see if the new machine has the same problem (most department/big box stores that carry machines have a very liberal return policy since they do not have personnel dedicated to sewing machines).
  6. If the new/replacement machine has the same issue, we would suggest you return it (no sense frustrating yourself) and perhaps find a local sewing machine dealer to purchase a machine from. Authorized sewing machine dealers are geared towards providing machines and service (before and after sale) and are worth the extra $ for the peace of mind and knowledge that you'll have someone local to call on for help.
Best of luck with your machine - we hope it's something minor and you're up and sewing soon! Don't hesitate to reply to this post if we can offer further help, ideas or suggestions.

Happy sewing,
Kim & Linnette
www.sewingexpressions.com

Posted on Jul 23, 2008

SOURCE: Will not zigzag

Have the hook timing checked on your machine.

Posted on Oct 10, 2008

bargainbox
  • 1388 Answers

SOURCE: Machine not sewing

Make sure you have threaded the machine from right to left, it sounds like the needle thread is trapped under the lower looper thread and cannot form a stitch.........start the threading over from scratch like this:

  1. Lower Looper
  2. Upper Looper
  3. Left Needle
  4. Right Needle
Is there a diagram for how to thread on the inside of the door ?

Follow that slowly and carefully to make sure you have not missed any thread guides on the way, as each one needs to be followed through to ensure correct tension and thread progression.

If you are certain that all threaded correctly, did you have a fabric jam and pulled it loose ? If so, the timing may well be affected.

Post an update and we'll get this right.

Bargain Box

Posted on Feb 03, 2008

  • 1 Answer

SOURCE: singer simple sewing machine will not sew

need needle threading instructions singer 3116 simple. pictures would help. thank you

Posted on Mar 15, 2009

kent581
  • 87 Answers

SOURCE: Viking Lily - free motion quilting - thread loops on underside.

I need more info.
>Where is your presser fooot pressure set(1-9) it should be around 4?
>How fast are you free motioning (faster is better? from 1-10 10 being full speed.
>Is your bobbin threaded correctly (I need to cover the basics.)?
>Never never use a needle smaller than a 90/14 for free motion (I know everyone's an expert...but trust me)
After all this, it's OK to tighten your tension up on top a little when free motioning and getting eyelashes/spider webs on bottom. around 6 should do it though.

Posted on Mar 19, 2009

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1 Answer

Looped threads


Hello Rosemary
Looped thread on the underside are created by the upper thread. Loops on the top of the fabric are created by the bobbin thread. Whichever one is looping, has very little tension. This may be corrected by:
1. Re-threading the upper thread according to manufacturer's specifications.
2. Re-wind bobbin and re-set it into bobbin case and bobbin case area according to manufacturer's specifications.
3. Ensure that the needle is correctly installed and is the correct needle for the sewing machine.
4. Ensure that he bobbin being used is the correct one for the machine.
5. Double check that the tension on the upper thread is at the correct setting.
6. Double check that the tension unit is clean and free of dust, lint or lodged thread/s.
7. Double check that the bobbin tension is correctly set ... if you are comfortable doing so, otherwise leave it for a qualified technician
8. Make sure that he presser foot is down when stitching.
Please let me know how you go.
Happy stitching.

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Hook don't catch thread

Possible reasons:
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  • stitch plate damaged
  • wrong hook timing (sewing machine needs to be taken to a BERNINA dealer for servicing)

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What kind of thread are you using. The most often problem today is that the thread is too thick for the size of needle. Try using a Metallica size 90 or a top stitching needle size 90
if the thread is a cotton type or a quilting thread it is often to thick to travel easily through the eye of a needle quickly to form a good stitch.

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check to make sure that the timing is correct for the loop to be made..guessing 3- 4 mm past bottom center. also the thread size can make a difference. it may be catching in the basket at the positioning finger for the basket.it must be able to slip past the finger to create a stitch. hope that helps point you in the correct direction.

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Zigzag stitch not catching


try these suggestions and see if they help

Skipped stitches
1. The needle is not inserted correctly
Remove needle & reinsert needle( flat side towards the back of machine)
2. The needle is damaged
replace with new needle
3. The wrong size needle is being used
Choose a needle to suit the thread & fabric
4. The foot not attached correctly
Check & attach correctly

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Hiya Fiona, i think your problem may be that the tensions are not correct. Try pulling the tread with your hands to see if they are too tight or too loose and either tighten or loosen tensions accordingly. Hope i was of some help to you, kind regards.

Feb 11, 2012 | Sewing Machines

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I have cleaned the machine. I have tried both solitions in my Jaome machine and still loops are forming on the botom. i have even moved the little screw on the bobbin- tested the thread and changed the...


If the loops are forming on the bottom it is the TOP thread tension you need to check. Make sure it isn't too loose. Also is the needle the right type and size for the fabric? Check the stitch out on plain cotton fabric if a tension adjustment doesn't fix it.

The TOP thread effects the UNDERSIDE of the stitch and the BOBBIN thread effects the TOPSIDE of the stitch :)

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The loopy stitching is usually do to threading the machine with the presser foot down.

Raise the presser foot and re-thread or pull about 8" of thread through the needle and see if the loopy stitches go away.

This may also be the issue with the zig-zag stitch.

When the machine is threaded with the presser foot down, the tension is closed and the thread cannot enter as it should for the tension to control the flow of thread to the needle. The thread then feeds too fast and the stitching is distorted.

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With some sergers, but not many (singer 14u64 comes to mind), the top of the stitch will be an overedge that mates with the right needle thread, and the left needle thread will appear as a separate straight stitch. When you look at the underside of the stitch, the overedge will go all the way over to the left needle (the full width of the stitch). This is normal if you have this type of machine. Another stitch some sergers do (2/4 thread sergers) is a 2 thread chain thal looks like a lone straight stitch on both sides, and a 2 thread separate overedge.

As far as the threading of the takeup, it totally depends on your model. Always post your model number when you have questions as sergers vary greatly in design.

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