Question about Sewing Machines

5 Answers

Thread bunches on bottom of fabric

Please help,

When I sew the thread bunches up on the bottom of the fabric, I do not know why. Also, sometimes the thread breaks.

Posted by on

  • 2 more comments 
  • Anonymous Mar 13, 2014

    thread is bunching up at bottom

  • Anonymous Mar 17, 2014

    the top thread bunches up on the bottom of the fabric on my kenmore sewing machine

  • Anonymous Mar 21, 2014

    bottom thread bunching

  • Anonymous Mar 23, 2014

    Kenmore ultra mini the top thread is breaking on back side of fabric

×

5 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Sewing Machines Master
  • 1,388 Answers

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....

Thread bunches on bottom of fabric - 4c76dc1.jpg ...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 !

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 consistant diameter with good thread, and less compensating to be done by your tension plates and less thread breaks !

If you want any more help with this, just post back here, or, drop a line through the "Contact Us" page at

www.bargainbox.com.au

Posted on May 10, 2008

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

Bunching on bottom means the upper thread is not placed correctly or the tension is off. Adjust your upper tension to a higher number and see what happens.

Posted on Apr 27, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Make sure both upper and bobbin threads are pulled to the rear of the presser foot and are under it when beginning a new seam. also try starting your new seam with the fabric a little further to the rear of the presser foot or use a small scrap of fabric to begin a new seam and sew off it to the actual seam you are sewing. Usually it is the thread postions that are the problem.

Posted on Jun 11, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

On my janome sewing machine, the threads are loose on the top and bottom, i treid adjusting the tension, but no avail. on the machine the model is written as JS61004

Posted on Jul 19, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

For me, I have this problem whenever my sewing machine needs to be oiled. Try oiling your machine and see if it makes a difference.

Posted on Apr 30, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Why is sewing machine thread gathering under fabric?


adjust the tension to a appropriate setting,
See the video here.
Sewing Help Sewing Machine Problem Thread Bunching Under Fabric
The knob and its location can differ based on the model of your sewing machine.

Oct 29, 2016 | Sewing Machines

2 Answers

I'm having trouble properly threading my Elna 1010. Could you please help? The bobbin thread keeps bunching up and breaking


bunching of thread under the material is an indication of insufficient tension of the needle thread
increase the needle tension until the threads meet at the center of the materialbeing sewn

Jul 26, 2016 | Elna Sewing Machines

1 Answer

Why is my Brother SQ9185 Sewing Machine thread bunching up on the back side of the fabric?


That is called thread nesting or bird nesting. Usually it is because it is threaded incorrectly (sometimes the thread jumps out of a thread guide or the take-up lever), the upper thread is not seated in the tension disk, or the upper tension is incorrect.

First thing, install a brand new needle.
Second, remove the upper thread, RAISE the presser foot and rethread from the beginning--make sure the correct thread path is followed.
Third, check that the upper tension is set at the midway point between high & low number.

Test. Adjust the upper tension as needed. Re-test. Tension is correct when the upper and bobbin threads meet in the middle of the fabric.

need elp with tension on singer cg550

..

Apr 07, 2016 | Brother Sewing Machines

1 Answer

Thread is getting bunched up in machine


First thing: install a brand new needle.
Second: remove upper thread. RAISE the presser foot and rethread from the beginning. Set upper tension to the midway point between high & low numbers.

These links may be helpful:

Sewing Machine Thread Bunching Up Here Why

5 Common Causes of Birdnests

Why Do Get Bunched Up Thread Under My Fabric

WHY IS THREAD BUNCHING UNDERNEATH MY FABRIC

...

Feb 04, 2016 | Sewing Machines

2 Answers

Top thread is bunching underneath


bunching underneath is an indication that the top tension is incorrect
switching projects and materials also that attention has to be given to tension adjustment both bottom and top
the catching sometimes indicates that a tension is too tight and is pulling the needle out of line

Jul 25, 2015 | Sewing Machines

1 Answer

The thread bunches under fabric when sewing on leather


WHEN YOU FIRST THREAD LEAVE THE FOOT UP AND PAY ATTENTION IF YOU ARE GETTING A SNAG WHILE YOU ARE THREADING. IF YOU ARE THEN FIND OUT WHERE THE SNAG IS AND CORRECT IT. NOW, LOWER THE UPPER FOOT PRESSURE. THIS MUST BE LOWER BECAUSE THE FABRIC IS SO MUCH MORE THICK. IF IT IS STILL A PROBLEM TAKE NOTICE IF THE BUNCH IS ON BOTTOM OR ON TOP. MORE ON TOP THEN LOWER TENSION. IF THE BUNCH IS ON BOTTOM THEN TIGHTEN THE TOP. START YOUR TENSION ON TOP WITH THREE. THE BOTTOM NEEDS TO BE CHECKED FOR PROPER TENSION. THE BOBBIN SHOULD JUST HANG FROM YOUR FINGER. IF YOU BOB YOUR FINGER IT SHOULD BEGIN TO EXTEND JUST A SMALL AMOUNT. JUST REMEMBER THE THREAD IS THICKER AND MUST BE ADJUSTED BECAUSE OF THIS.

Jan 10, 2014 | Husqvarna Husky 145

1 Answer

Thread keeps on bunching up on the bottom side of the fabric


try changing the needle
check the top thread tension to make sure it's not to loose
rethread the machine top & bobbin, make sure the bobbin is wound
correctly & inserted correctly into the machine
make sure the thread has not come off the thread take up lever

Jul 11, 2012 | Brother CS6000i Computerized Sewing...

2 Answers

When I try to sew, the thread on the bottom of my fabric gets all bunched up. Sometimes the needle gets stuck. This happens all the time. I re- thread the whole machine, but it always eventually happens...


put a new needle in the machine

clean under the needle plate in the feed dog area for lint
also clean in the bobbin area for lint & loose threads

keep a check on the thread take up lever,, because when the thread comes off the thread take up lever it will build up thread under the fabric & can jam up the sewing machine

Nov 17, 2010 | Elna 1010

1 Answer

The tension is off ?? bottom thread bunches


Sounds like it could be! Probably worth trying to readjust it. Are you using a fine fabric too? That can cause bunching.

Apr 05, 2010 | Kenmore 15516 Mechanical Sewing Machine

1 Answer

Similar issue with bunching on the bottom side of vinyl


when sewing thick fabrics and when using thick threads you will usually need to tighten top tension - on most machines to maximum in order for the machine to pull the thread up into the fabric. you must also use a needle which will slide along the thread when thread is through eye of needle (take needle out of machine, put thread through eye and see if needle will pass freely along thread - if not, use a larger needle)

scott.

Jul 11, 2009 | Bernina Activa 130

Not finding what you are looking for?
Sewing Machines Logo

Related Topics:

689 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sewing Machines Experts

Bargain Box
Bargain Box

Level 3 Expert

1388 Answers

Douglas Plant
Douglas Plant

Level 2 Expert

165 Answers

Cindy Wells

Level 3 Expert

4755 Answers

Are you a Sewing Machine Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...