Question about Juki DDL-8300

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While sewing with upholstery thread the thread is fraying at the needle and breaking. Also I am using the threadholder on top of the machine and it seems like the spool will spin fast and a lot of thread will unwind and tangle and that is mainly when the thread frays at the needle

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

bargainbox
  • 1388 Answers

SOURCE: tangle in bobbin area, stuck needle

Please TRY the solution BEFORE giving your considered rating.




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 !

www.bargainbox.com.au

Posted on Nov 13, 2008

  • 5 Answers

SOURCE: THE NEEDLE WILL NOT CATCH TO SEW MATERIAL

Most likely, the needle is not inserted correctly. You don't say what kind of machne you are using, but every one has a different needle insertion. . Some thread front to back, some left to right, and some have an indentation just above the threadhole.. Also, if the needle is not perfectly lined up, it won't thread, or sometimnes, if the bobbin is not inserted correctly, it won't thread.Check your threading diagram, and pay close attention to the needle position.Good luck!

Posted on Mar 24, 2009

  • 1 Answer

SOURCE: how do i thread the bobbin without the needle

you have to push thebobbin threader away from the sewing part

Posted on Jun 25, 2009

wentlanv
  • 710 Answers

SOURCE: machine won't sew, seems as

Hi rjmcreations,

I will give you the website of a man who can answer any question you could possibly come up with...

http://sewvacdoctor.com/

You'll find his email address towards the top of the page. Good luck.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie

Posted on May 15, 2011

Zenqi
  • 208 Answers

SOURCE: I love my machine except when trying to free

Properly balanced tensions are critical. The lower bobbin tension must be tight enough to pull the knots down. To which number is your upper tension set? It should be around three. Skipping stitches is an indicator of hook timing and hook/needle clearance issues.

Posted on Sep 01, 2011

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2 Answers

Why does top thread keep breaking?


Sounds like your tensions, both upper and lower are out of whack. Easily fixed if so...google a vidyfor your make/model machine on adjusting both upper and lower tensions.

Jun 18, 2017 | Sewing Machines

1 Answer

My Elna 730 pro. The thread is fraying and breaking.


Be sure to install a brand new needle that is recommended for the thread and fabric you are using.

Check to make sure the machine is threaded correctly. Remove the thread and rethread from the beginning.

Could be old/bargain bin variety thread. Use only fresh, good quality thread.

Another possibility is an incompatibility of needle, thread, fabric. Make sure the thread is not too small for the needle eye which will cause thread fraying. If the fabric is coarse or dense, it can also cause the thread to fray--a needle with a larger scarf (ie top stitch needle) will help protect the thread during the multiple times the needle pierces the fabric. In rare instances, the needle may be defective or there machine has a burr somewhere that is catching and shredding the thread.

All About Needles

Schmetz Needles Needle Guide

It is important to install brand new needles frequently, ie every 8 hours of sewing. The needle is a very inexpensive item but could be very expensive in frustration, damaged fabric, and possible machine damage.

May 09, 2017 | Elna Sewing Machines

1 Answer

Juki Lu-562 breaking, fraying thread. The tread will fray and eventually break a lot. Is there anything else besides a different size needle or burrs on the foot plate for foot feed?


Be sure that you are using only fresh, good quality thread. Old or bargain bin thread will fray easily. Does the thread have little hairs (fibers) sticking out? If so, get rid of it. Try a different type of thread, ie polyester thread. (FWIW, Coats & Clark used by a stand-by, but it is a lesser-quality thread these days.) Be sure to use the same thread in the bobbin--polyester thread will tend to cut cotton. Try flipping the thread spool over so it feeds off in the opposite direction. Make sure the machine's bobbin area is clean of any lint or debris. The tension may be too tight. The thread may be mis-threaded or the thread is restricted somewhere, ie wrapped around a thread guide or the spool pin. Be sure the thread is running through the thread guide immediately above the needle. Remove the thread and rethread from the beginning. You might try a different type of needle, ie top-stitch needle. Top-stitch needles have a larger scarf that will protect the thread as it pierces the fabric multiple times before forming a stitch. A Top-stitch or Metafil needle has a larger eye to accommodate bigger thread. Are you sewing unusually coarse fabric? It is abrasive and could be causing the excessive fraying.

If the fraying continues, there may still be a burr somewhere.

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Mar 13, 2017 | Juki Sewing Machines

2 Answers

Top thread keeps breaking


Upper thread breaking is usually a sign of incorrect threading or tension too tight, although there are other possible problems:

Industrial Garment Printers Sewing Machines

When threading the upper thread, be sure to ALWAYS RAISE the presser foot so the thread will seat properly in the tension disks. Avoid old thread or bargain bin thread. If the thread is fraying and breaking at or near the needle eye, then try a different type of needle with a larger thread groove that will protect the thread from fraying on rough fabric. Also, check that the thread is not hanging up on something, ie the slit on the side of the spool where the thread tail is stored.

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Jul 02, 2016 | Brother XL-2600I

1 Answer

Iam sewing seats. but the threed stared braking at the needle & it want saw.


Most likely, it has to do with incompatibility of the needle, thread, and fabric. The force of the needle penetrating the fabric multiple times is actually causing the thread to (wear &) fray and eventually break. There are needles with larger grooves that tend to protect the thread during stitching. Some may recommend a Top Stitch Needle (Home Machine Needles Superior Threads Why Topstitch? The Topstitch needle is the most common needle type used and recommended by professionals and educators. We recommend the Topstitch for piecing, quilting, embroidery, appliqu?, and construction. These needles are available in four sizes to accommodate all thread types, including metallic threads. The Topstitch needle has a larger eye and deeper groove. It is often referred as the MAGIC NEEDLE. It really does make a difference in your sewing experience.)
Why Use Topstitching Needle

Also, if the thread is a tight fit through the needle eye, it will also tear the thread. Make sure that the thread will slip easily through the eye. Go to a larger needle, instead of 90, try a 100.

Be sure to use a brand-new needle.

All About Needles

The Parts of Sewing Machine Needle

You may also consider changing the type of thread you are using. Go with a stronger thread, ie polyester, rather than cotton. Cotton will shred and break easier.

You will probably need to re-adjust the thread tension. If it is too tight, it will also break the thread. If you are using a heavier weight of thread, you will need to adjust both the upper and bobbin tension to accommodate the heavier thread.
Bobbin Tension How and Why Tension is Adjusted

If you sewing fabric that is sticky, ie vinyl, oilcloth, you should try to use a roller presser foot, a teflon presser foot, or a walking foot to help the fabric move with the feed dogs.

Sewing Heavy Fabric with NON Heavy Duty Sewing Machine SEWING IN GENERAL

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Sewing through many thick layers of fabric Sactin

http://www.kollabora.com/q-a/sewing-denim-and-thick-fabric

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How to Sew Upholstery DoItYourself com

...

Apr 22, 2016 | Sewing Machines

3 Answers

Fy5318 breaking thread on multiple layers of material, how to adjust?


either the thread is old, or the tension is to tight.
or there is a bind some where in the line layout.
you mite goto there website and look under FAQ section for other help
or
www.youtube.com/sewing/canvas/material/
www.youtube.com/fy5318/multiple/layers/of/material/setup/

www.ask.com/sewing/multiple/layers/of/material/and/setups/

Sep 17, 2015 | Yamata Fy5318 Mechanical Sewing Machine

1 Answer

My top thread often begins to fray and then breaks while I am sewing


try these suggestions and see if they help
The top 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
8. Try a different spool or cone of thread

Feb 16, 2013 | Janome 8080 Computerized Sewing Machine

2 Answers

Thread frays and breaks when sewing and embroidering.


Make sure that the machine is threaded correctly, that the needle is in properly, that the bobbin case and bobbin are both inserted correctly and that you are not using old thread.

Make sure that there is a new needle in the machine and loosen the top tension about a number

You need to carefully re-thread the machine.
.

Aug 03, 2009 | Janome Memory Craft 9000 Computerized...

1 Answer

Morse 6300, the thread keeps breaking every attempt i make


Change your needle, make sure the needle is new. and change your thread. Use a high quality thread and rethread the machine carefully, following all the guides. Also, check your tensions. I bet it is the needle tho.

May 11, 2009 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Thread breaking on Simplicity Denim Star


Hi, when your thread breaks or frays right before in goes through the eye of the needle:
  1. Change your needle - after awhile, the eye can wear down and cause your thread to break or fray, eventhough it looks like the thread isn't even going through the needle. When you change your needle, make sure to install a needle that is compatible with the thread you are using (see below).
  2. If your thread still frays or breaks, make sure you've threaded your machine correctly. Most machines have a hook or bar right above the needle that your thread need to pass thru before you put the thread thru the eye of your needle. Sometimes that spot above the needle is really hard to get to, and sometimes the thread slips out. Always a good idea to double check. If you are still having problems, the needle you are using is probably the wrong size.
There are lots of needles on the market, and lots of threads. You need to make sure your needle is compatible with the thread you use for each project.

The most common needles are size 80 and 90 universal needles, which are fine for most sewing projects. But if you are using a specialty thread, you need to use a needle that is designed to work with that particular thread. For example, top stitching needles have a larger eye than a universal needle, because top stitching thread is thicker than sewing thread. The same is true for metallic thread - needles made for metallic thread an eye designed to allow the thread to pass thru without fraying. Further, if you using fine thread, you need a small needle.

FYI - unfortunately, thread sizes do not correspond directly with needle sizes. Small needle numbers indicate a needle with a small eye. But the smaller the thread size, the larger the thread. For example, size 50 thread is very fine and would usually be used with a size 70 needle. Size 30 thread is fairly thick and would probably be used with a size 90 top stitch needle.

Hope this helps, and remember, you should always change your needle after about 10 hours of sewing, no matter what size needle you are using. If you have more questions, please post again. Thanks, Ginny

Dec 16, 2008 | Simplicity American Denim SA1100...

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