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Topic: Sewing with nylon thread?  (Read 8025 times)
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sapphire_distortion
« on: June 29, 2009 02:31:13 PM »

Hi guys! So I got a job sewing some tarps, and they provided nylon thread to sew it with - the problem is that the nylon thread keeps "shredding" in my machine, for lack of a better word. The bobbin thread is fine but the top thread seems to be getting stuck in the needle or something, it just gets thinner and thinner until it finally disappears. Any ideas what I'm doing wrong? I thought maybe it was the needle so I switched it out and I'm still having this problem. : /
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KLKing
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« Reply #1 on: June 29, 2009 02:54:53 PM »

Are you using an industrial machine ? Is the upper thread tension too tight? I sew with a #46 weight nylon thread all the time. I also have a 69 weight, but it is much heavier, I don't use it much. The needle needs to be turned the right way, and make sure your tension isn't too tight. For tarps, use a minimum 14 sharp needle. A 16-18 would be better. Usually I have a little trouble with this thread if there is a burr on the needle. Don't sew over any pins.That will mess up your needles, and stitch timing real fast. You can use a stapler inside your seam allowances, turned longways, and out of the way of the feet and needle. This is better than pins on big, heavy stuff. I hope this helps. K
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sapphire_distortion
« Reply #2 on: June 30, 2009 03:29:11 PM »

Are you using an industrial machine ? Is the upper thread tension too tight? I sew with a #46 weight nylon thread all the time. I also have a 69 weight, but it is much heavier, I don't use it much. The needle needs to be turned the right way, and make sure your tension isn't too tight. For tarps, use a minimum 14 sharp needle. A 16-18 would be better. Usually I have a little trouble with this thread if there is a burr on the needle. Don't sew over any pins.That will mess up your needles, and stitch timing real fast. You can use a stapler inside your seam allowances, turned longways, and out of the way of the feet and needle. This is better than pins on big, heavy stuff. I hope this helps. K

Nope, I'm using my Rocketeer, not an industrial. I keep loosening the thread tension, the stitch is coming out fine tension-wise but it seemed kind of tight at first when needing to pull some extra thread out - so now it's at like a 5 which is really low for that machine! The nylon tarp is 200 denier, so it's really not very heavy at all - I started out with a 14 sharp but switched to a 16 sharp, I don't think I have any 18s right now. And it's a new needle, so I don't think there's a burr on it. The thread is Gutermann "Bulky Nylon" textured overlocking thread, No. 120. See, they'll be dying the tarps after I get done sewing them, and they want nylon thread so it all dyes the same...but I got some other nylon thread to try and it's all loosely twisted like the Gutermann thread is. I suggested using polyester thread and she's afraid it'll shrink. Any other thoughts?
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« Reply #3 on: June 30, 2009 05:39:47 PM »

Polyester thread shouln't shrink, but cotton will. And poly won't take dye. It seems like it may be a thread I am not familiar with. The stuff I use comes on large cones, and it's pretty thick. Is there any reason they can't dye the stuff first, and sew it afterwards... Here's a thought... I once worked for a company who made tye dye clothes. They did stage one and stage 2 sewing. Stage one was the inside sewing, like main seams, the stuffthat didn't show. But it got the item in one piece for a nice dye pattern. Then, they did thier final trimming, and stage 2 finish sewing. Perhaps this might allow you to use a normal sewing thread? K
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BT
« Reply #4 on: July 01, 2009 01:35:01 PM »

I believe the problem is caused by (i) the needle and (ii) your sewing speed. Anyone who has ever used metallic thread has experienced the same issue. I would try using a 100 topstitching or jeans needle. This will have the largest hole to accommodate the thread.

In addition, you may need to slow way down. Keep checking the thread as you sew and stop as soon as you see it start to fray.

There is a product on the market called Sewers Aid that may also help. It is silcone based and helps the thread slide through the needle.

Let us know how it turns out.
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donniesgirl
« Reply #5 on: July 08, 2009 10:54:56 AM »

I vote for needle & tension, and possibly quality of thread.  Sometimes I sew with invisible thread & my machine hates Sulky (too thin - it breaks after a bit) but it likes Guterman.
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sapphire_distortion
« Reply #6 on: July 09, 2009 10:36:13 AM »

Yeah, I gave up and just got poly thread, they've dyed some of them and said it works fine. Slowing down wouldn't have been a good idea as I'm on a pretty tight schedule, and when I was looking online I found someone's comment that overlocker nylon thread won't work in sewing machines, since it kind of "poofs" or unwinds when tension is loose, and that means the hooking mechanism under the machine can't get ahold of it. Or something like that! At any rate, I tried everything I could think of and it wasn't working, so I just took the easy route and switched Tongue
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