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what would case the thread to break when fabric is stretched
Ida wants to learn
Ida wants to learn
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TX USA
Member since 1/2/09
Posts: 27
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Date: 4/21/12 11:43 PM

I am trying to make a swimsuit. It is a nylon/spendex blend. I am using polyester thread, size 11 stretch needle. Zig Zag stitch. I have a singer 401a. I was trying to follow what the manual suggests for knits. It says BL for zig, zag. Red lever should be at 1-1/2 which is what believe I am doing. The red lever is stitch location. I believe it is s uggesting I have the stitches go to the left.

AFter I run the test fabric through, I start yanking on it pretty hard and the thread breaks. I went and yanked on my ready made swimsuit equally hard and it doesn't break so something isn't right.

Anyway, I have been trying to figure out where I am going wrong and decided to turn here for advice. TIA.

andye
andye  Friend of PR
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Date: 4/21/12 11:50 PM

I found this stitch chart for the 401a. Try using the multi zigzag.

And, IIRC. wooly nylon can be used in the bobbin.


-- Edited on 4/21/12 11:58 PM --

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Bernina B330
Feet: 1,2,3,3A,4,5,7,8,10,13,16,18,20, 29,32,35,37,50,64,70,71,82,85,86, 92

Ida wants to learn
Ida wants to learn
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In reply to andye <<


Date: 4/22/12 0:34 AM

I believe that worked out better, Thanks Andye. I don't have that disk the chart suggested. This machine was given to me and the original owner said some things were missing and that disk happened to be one of them.

So I went without and it is a lot better.

I have noticed too that the bobbin thread when stretched out kind of puckers, loops. It isn't real bad but I want perfection. lol. I don't want this swimsuit to come apart at the pool. lol.

DreinPA
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DreinPA  Friend of PR
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In reply to Ida wants to learn <<


Date: 4/22/12 9:34 AM

It will never be the SAME as RTW, but you can get closer.
The threads pop because they don't have the same stretch as the fabric.
So, the woolly nylon is a stretchier thread.
Then the multi-stitch zig-zag has more stretch in it. Alternatives also include a double needle straight stitch with woolly nylon in the bobbin.
Then you must stitch this from the right side of the fabric. The top will appear as two lines and the underside will be a zig-zag between the two rows. Gentle even tension on the fabric (stretching it as you sew) can also give you some additional movement but if you stretch it unevenly the stitches will appear uneven at the end.

HTH
Andrea

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Don't confuse accessibility with ease; just because anybody can pick up a needle and thread doesn't mean sewing quality garments is easy.

SewPaula
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In reply to Ida wants to learn <<


Date: 4/22/12 11:03 AM

You don't need the disk with the Singer 401a. Set your stitch to B Q instead of B L and that will produce the multi-step zig zag stitch.

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If I were a sewing machine, all I would have to do is lift up my foot and all my tension would be gone.

Sewing with my lovelies: Pfaff Ambition 1.5 Kenmore 385.19365, Babylock Imagine and BLCS, 4 Brothers (PE150, PE770, 1034D, 2340V), and a chorus of vintage Singers

Ida wants to learn
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Date: 4/22/12 10:06 PM

Didn't find any wool Nylon thread at my local wal-mart. I will have to remember that next time I go to Handcocks. I have never stitched with a double needle. I know my machine has that justs never used it.

DreinPA
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DreinPA  Friend of PR
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In reply to Ida wants to learn <<


Date: 4/23/12 9:06 AM

I believe the 401 will actually accept two needles side by side, in lieu of a double needle.

------
Don't confuse accessibility with ease; just because anybody can pick up a needle and thread doesn't mean sewing quality garments is easy.

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