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Message Board > Sewing Machines > Thread breaking and shredding WHY WHY??? ( Moderated by Sharon1952, EleanorSews)

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Thread breaking and shredding WHY WHY???
Calling all sewing machine techs!!
sheep29
sheep29
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KS USA
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Date: 4/19/10 11:57 PM

I and several other folks in the Janome 6500/6600 Yahoo group are having a recurring problem and I would love to know why. When FM quilting with 40 or 50 wt polyester thread, the thread either breaks or shreds after a short amout of time sewing. One member asked Superior Thread about the problem because she was using their poly thread and Superior's reply was to use a size 18 needle. In my opinion, there's no way that you should have to use a size 18 needle on a 50 wt. thread.

I was doing a bit of testing today and I was having the same shredding problem on a different thread that was also a poly. I noticed what seems to be happening is that just before the thread either breaks or starts to shred, the thread that is coming through the path of the machine, starts to twist from the take-up lever to the needle. When you pull the shredded thread out of the needle, the thread will twist up on itself. But why is that happening? Inquiring minds want to know! I don't have a problem with it straight stitching, just FM stitching. I tested a bit on my Juki TL98 machine and had the same problem, but the shredding didn't happen as often as on my Janome 6600. I am using brand new thread. I have tried every size and type needle there is with no varying results. The thread is on a cone and am using the thread antenna to pull it up vertically. I even tried winding the thread on a bobbin and pulling the thread off horizontally with no change. I have never had a problem with cotton thread, only polyester. Is this like the, "but doctor, it only hurts when I do this" and the doctor replies, "then don't do that"??!!

------
sheep29

ghillie
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Date: 4/20/10 1:20 AM

I'm so glad you brought this up. The same thing happens with my Janome 4900, regardless of type of thread or needle size (although I never tried size 18). It even happens with plain straight stitching. But it doesn't happen every time! I can see it coming when the thread starts looping out of the needle, & before long it shreds & breaks. It happens whether I hold the threads behind the needle when starting a seam, or not. Hope someone can help us...

Betakin
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Betakin
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In reply to sheep29
thumbsup 1 member likes this.


Date: 4/20/10 1:44 AM

I have seen several posts about Janome machines shredding thread over the past couple of years and I found it interesting because I have experienced the same annoying problem with my Janome/Kenmore but not ever with my other 3 other brand machines.

I always keep my speed control on the fastest setting and my Kenmore does stitch very fast and I have only had the shredding problem when using deco stitches and doing them fast. I found that using a larger needle and stitching a lot slower helps from having this problem most of the time...but it still happens at times.

glenj

glenj
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In reply to sheep29


Date: 4/20/10 6:36 AM

have you tried a schmetz top stitching needle.you can use an average size needle as the eye is large



skae
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skae  Friend of PR
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In reply to sheep29


Date: 4/20/10 8:25 AM

what kind of needles are you useing?
My dealer recomended the inspira needles.
I have no more breakage.
heres what they look inspira needles
with the other needles she also told me there is alot more stretch in the poly thread lossen the tension a little and it let the thread flow more freely. I would recomend inpira needles
-- Edited on 4/20/10 8:27 AM --

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Galatians 5:22-23 The Spirit produces love, joy, peace, patience, kindness, goodness, faithfulness, humility, and self-control. There is no law against such things as these

sheep29
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Date: 4/20/10 10:24 AM

I have tried Inspira size 90 and 100 topstitch needles to no avail. Also several types of Schmetz.
My latest thought is the direction the thread comes off the spool, that is, clockwise vs. counterclockwise. The thread in the bobbin comes off counterclockwise and the top cone thread comes off clockwise. Could that be a problem?

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sheep29

cherylwashere
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cherylwashere  Friend of PR
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In reply to sheep29


Date: 4/20/10 11:00 AM

Hi Sheep29,
You could contact Janome, they have a wonderful website and respond quickly to all questions. Ask Jan is the answer Queen.

As far as the thread direction, I never get that one right either. I usually do clockwise with a vertical spool holder. When it's in a horizontal position, I am clueless.
Cheryl

------
Bernina 820, Bernina 330, Pfaff Creative 7530, Janome 1600P

Michelle T

Michelle T
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In reply to sheep29


Date: 4/20/10 11:11 AM

I used to have this problem with my old Kenmore(Janome), and discovered a few things.

1: It did not like different thread in the bobbin and spool. If I had poly in one and cotton in the other this would happen.

2: Cheap thread. My Janome loved Mettler threads.

3: Needle, too small a needle sometimes was the culprit or a dull needle

4: Turn the spool over, sometimes the thread catches on the spool.

5: Rethread the machine

6: Clean the bobbin race.

I only ever had issues with poly thread shredding, never cotton. Usually one of the fixes above would solve the problem. Most often it was that I had cotton in the bobbin and poly on the spool that it did not like.

I am not a quilter, I had these issues with garment sewing.

------
Proud parent of a Dwight International School Honour Roll Student

TessKwiltz
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TessKwiltz  Friend of PR
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TX USA
Member since 9/21/07
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Date: 4/20/10 1:16 PM

Quote:
4: Turn the spool over, sometimes the thread catches on the spool.
This is the first thing I'd try - I had it happen recently on some Sulky thread.

It sounds like you may be introducing a twist off the spool. Probably in how you have your thread set up. Straight-wound thread generally likes to come off the side. Cross-wound thread likes to come off the top. Which Superior thread are you using, and what size? I think most of Superior threads on regular sized spools are straight-wound, but the cones are cross-wound? Someone please correct me if I'm wrong

Sometimes thread likes a thread stand - especially the larger cones like from Superior - you don't mention if you're using one. Edited to say never mind, it looks like you have one built in?

Edited to say: I just looked at your particular machine. If you are using the straight-wound spools, is there a way to hold the spool horizontal, so it can ocme off the side??
-- Edited on 4/20/10 1:20 PM --
-- Edited on 4/20/10 1:25 PM --

------
Tess

On threadpainting flowers: "How many colors are in a flower? ... How many do you have?" - Ellen Anne Eddy

ghillie
ghillie
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Date: 4/20/10 2:50 PM

Does the 6600 have auto tension? I found that when I took my 4900 off auto & set the tension myself the situation (so far) has improved.

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