Question about Necchi 3537 Mechanical Sewing Machine

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Thread breaking Bottom thread keeps breaking

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

bargainbox
  • 1388 Answers

SOURCE: I am hemming blue jeans. The top stitch looks

Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.

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....

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 !

FRONT LOADER:
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all
back properly.
165ca5c.jpg 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 consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks

Best Wishes
Martyn
Bargain Box in Australia

Posted on Oct 04, 2009

  • 980 Answers

SOURCE: The thread keeps breaking while I am sewing.

nake sure the machine is threaded proiperly with a good mercerised thread no thicker than a number 40, make sure the needle is in the correct way round, top tension about 4 or 5

Posted on Oct 26, 2009

  • 96 Answers

SOURCE: The thread keeps snapping after twenty or so

change the needle, if it continues, youe feed dog maybe out of adjustment

Posted on Dec 13, 2009

RichSew
  • 179 Answers

SOURCE: why does the thread keep breaking ?

The most common reason is the needle not inserted correctly (backwards), other causes can be burrs on the needle plate opening or burrs on the parts in the bobbin area.

Posted on Jun 03, 2010

SOURCE: The bobbin thread breaks

if upper thread is breaking
1. needle in backward
2.upper tension to tight-check manual for proper setting
3.needle maybe bent-try rolling needle on flat surface to see if it's bent & if so replace
4.thread may hang on bobbin case-check area for lent or fragments of old threads
5. knotty or cheap thread-always use good quality thread
if lower thread is breaking
1.the most probable cause of lower thread breaking is an inproperly wound bobbin
2.bent bobbin
3.lint built up in case
4. thread catching on a spring or latch

Posted on Jul 29, 2010

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1 Answer

My machine keeps on breaking the thread


You don't state which thread is breaking, so will assume it is the top thread.

AVOID using old or bargain bin thread!

Remove the thread.
Install a brand new needle.
ALWAYS RAISE the presser foot and rethread from the beginning.
Verify the thread path is correct.
Set the top tension to the midway point (this may need to be tweaked for your individual machine).

If it still breaks, then the thread may be catching somewhere, perhaps on the needle plate or in the bobbin area. When a needle deflects, it will sometimes strike somewhere and cause a burr or rough spot. That rough spot will then catch the thread and cause it to break or shred.

Wrap your index finger with a fine piece of scrap fabric like chiffon, nylon knit, or silk. Then run your finger around the surface (top & bottom) of the needle plate and in the bobbin area. If the fabric catches, there is a burr. Also check the hook/shuttle as this where a lot of burrs are located. If it is a small burr, it can be smoothed with a fine emery board or emery cloth. It the burr is large, the part may need to be replaced.

Sewing Machine Problem 1 Thread Breakage

Sewing Machine Thread Keeps Breaking

http://www.servicethread.com/blog/stop-industrial-sewing-thread-breaks

Apr 15, 2017 | Sewing Machines

1 Answer

Kenmore mini ultra The top thread breaks off from needle after a few stitches. The bobbin seems to Be catching the top thread. Thank you. ??


If the top thread sews a few inches and then breaks, something is catching the top thread and holding it until it breaks. Usually, this will happen when using the old style thread cones with the slit in the edge to keep the thread from raveling off the spool. To prevent the thread from hanging up, turn the thread spool over so the slit is at the top instead of the bottom. Sometimes top thread breaks will happen if the thread becomes looped around the thread spool pin.

Remove the thread, ALWAYS RAISE the presser foot and then rethread the upper thread. Verify that the thread path is correct and that the thread has not looped around a guide.

If the thread is fraying at the needle eye, the needle/thread are not compatible. Also, the tension may be too high.

Check that the upper tension disk is clean--no gunk buildup or thread pieces stuck.

If the thread is actually breaking when it penetrates the needle plate hole, there may be a burr or nick somewhere below that is catching the upper thread. You can wrap your finger with a piece of fine fabric, like an old pair of hosier, fine knit fabric, etc. and running your finger around in the bobbin area, under the needle plate. If you get snags, then you have a burr or nick. If it is small, you can sometimes smooth it with a fine emery board. If it is a large burr, you may need to purchase a replacement part.


Why Does My Top Thread Keep Breaking Sewing Machine

Sewing Machine Problem 1 Thread Breakage

Sewing Machine Thread Keeps Breaking

...

Sep 05, 2016 | Kenmore Sewing Machines

1 Answer

Brother750e in-no is dowloaded photo transferred to stitches using foil thread or embroydery thread , top thread keeps breaking, I've changed the needle don't know what else to try . Please help


Metallic thread is often easier to break when sewing. Make sure the thread is not brittle and old; It may also require "Metallic Embroidery" needles that have a slightly larger needle groove and eye spaces. Also, make sure your thread does not have additional tension on it when being fed from a vertical spool. allow the thread to flow horizontally off of the thread spool into the machine.Or place the spool bottom down on the table next to the machine and let the machine pull it up and over through the machine which needs to be very properly threaded.

Cheers,
Embroidery Services
San Diego, CA

Jul 09, 2016 | Brother Sewing Machines

2 Answers

Thread keeps breaking when I sew.


one of three issues: top tension too tight, bottom tension too tight, needle timing off.

Oct 21, 2015 | Elna 2005 Mechanical Sewing Machine

2 Answers

My sewing machine keep sewing a little bit but breaks the thread everytime the bottom thread is at 0 and 1 my top thread is at 2 or 3 and the top thread breaks please tell me what wrong I am new too.


possibly the top thread is being restricted in movement
check that the thread is between the tension plates and not behind it or knotted up in the way it is threaded
pull on the needle thread and it should move with a steady pull not very hard
if it is not moving fairly easily the check how you have the thread installed
also old thread will break easily as the bonding used to keep the strands together breaks down and is difficult for the thread to slide though the needle
another point is the needle to hook timing and the clearance there as well .
if there is a problem there , the hook will split the thread from the needle and break it
if you still have problems , take it to a sewing machine service center ( any one ) and they will advise of the problem and show you how to fix it

Oct 20, 2015 | Sewing Machines

2 Answers

I have a brother vx-1125 the cotton keeps snapping..but the tension is correct..please advise..


The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

Aug 17, 2012 | Janome Sewing Machines

1 Answer

I have a Simplicity Embrodery Machine, and the needle keeps breaking. I have checked the bobbin, changed the bobbin, changed the thread, changed the pattern. It sews for about 5 seconds and then breaks.


It could be the thread is hanging up and breaking the needle.

Check the thread spool for nicks - turn the spool so the thread is feeding from the bottom of the spool.

Watch the thread as the machine stitches, if the thread is pooling at the base of the spool, use a thread net on the spool.

Open the needle plate and remove the bobbin and bobbin case - clean out any lint or thread snips that may have accumulated there - do this often to help the machine work as it should.

Feb 19, 2010 | Simplicity Sewing Machines

1 Answer

I dont know how to fix the thread keeps breaking while sewing


Depending on the age of your machine and which thread is actually breaking (the top thread or the bottom bobbin thread) there could be a number of things that would cause your thread to continue to break.

1st) Check your tension adjustment-- this is the #1 reason why your thread will break. Sometimes it gets adjusted unintentionally so adjust it back and forth and see if that helps.

2) Make sure your bobbin is inserted correctly down below and that the thread can move freely from it.

3) You can try changing your sewing machine needle-- sometimes as they get worn or if they are not meant to be used with your particular type of fabric they will cause the thread to break.

4) Inexpensive thread could be the culprit--while easy on our pocketbooks, it costs less for a reason and switching to better quality thread has saved my sanity on more than one occasion!

Oct 09, 2009 | Sewing Machines

1 Answer

Thread keeps breaking


Your machine isn't threaded properly. Check to make sure #1, you have it threaded right and #2 the thread on all 4 spools is in between the tension dials. Good Luck and Hope this helps.

Aug 24, 2008 | White Sewing Speedylock 1600 Mechanical...

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