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Bad stitch, please help
Irina Grace
Irina Grace
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Date: 3/10/13 3:35 PM


Please, help me to figure out why my sewing machine (Brother XR-40)is doing that. I am just trying to do a straight stitch, and it does not come out well. My machine did not want to do a clean stitch on seams too... And now I have to do a zipper and lower thread is going completely crazy. Second day I am trying to fix it - I changed tension both upper and lower, I use different needles and threads...Is this something mechanical? Please help

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Irina Grace
English is my Second Language

Irina Grace
Irina Grace
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Date: 3/10/13 3:42 PM

I do not know if you can see a picture...Please right-click on icon and then click on "view image"

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Irina Grace
English is my Second Language

biochemistress

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Date: 3/10/13 4:27 PM

Are you sure the thread is passed through ALL of the tensions and in the take-up lever, and that the presser foot is down? Wonky stitches on the bottom generally means something is amiss with the top thread. If you're sure you have the machine threaded correctly, it may be the tension discs. Sometimes stuff builds up in them, so they don't keep adequate pressure on the thread. Try cleaning them out with a clean piece of cotton folded in half.

mgmsrk1
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Date: 3/10/13 4:59 PM

Using poly thread?

Your zipper foot is riding smoothly and you are not trying to push it closer?

Using a sharp. not a uni needle?

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KPM
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In reply to Irina Grace <<
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Date: 3/10/13 5:28 PM

If it's the tension disks, sometimes you can clear a jam by pulling unwaxed dental floss through the tension areas. After that, be certain that whenever you change thread, you cut thread at the spool and pull the old thread out through the needle - never by pulling from the spool end.

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Irina Grace
Irina Grace
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In reply to biochemistress <<


Date: 3/10/13 5:31 PM

Quote: biochemistress
Are you sure the thread is passed through ALL of the tensions and in the take-up lever, and that the presser foot is down? Wonky stitches on the bottom generally means something is amiss with the top thread. If you're sure you have the machine threaded correctly, it may be the tension discs. Sometimes stuff builds up in them, so they don't keep adequate pressure on the thread. Try cleaning them out with a clean piece of cotton folded in half.

I just cleaned with a cotton folded in half....did not see any build up left on a thread....Stitch is the same. Well, unfortunately I cannot see those tension discs... do I have to take my machine apart to see disks? Now I am pretty sure upper tension mechanism is broken....

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Irina Grace
English is my Second Language

Irina Grace
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In reply to KPM <<
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Date: 3/10/13 5:36 PM

Quote: KPM
If it's the tension disks, sometimes you can clear a jam by pulling unwaxed dental floss through the tension areas. After that, be certain that whenever you change thread, you cut thread at the spool and pull the old thread out through the needle - never by pulling from the spool end.

OMG...sewing for many years and was always pulling the thread from the spool end....Thank you so much for this tip.

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Irina Grace
English is my Second Language

Mufffet
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In reply to Irina Grace <<


Date: 3/10/13 5:49 PM

I would take out the bobbin, reset it being sure it is all right, then rethread the top completely, change the needle and do some trial seaming on a sample piece of cloth and play with the tension until you have a nice stitch again.

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Irina Grace
Irina Grace
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In reply to mgmsrk1 <<


Date: 3/10/13 5:57 PM

Quote: mgmsrk1
Using poly thread?



Your zipper foot is riding smoothly and you are not trying to push it closer?



Using a sharp. not a uni needle?




Poly thread Mettler Metrosene Plus 500m spool, bought recently at Hancock and very unhappy with this thread.....soooo thin and very uneven, not smooth...Does anyone noticed drop in quality for this thread? I have 1000m spool in white I got a couple of years ago with the same name Mettler Metrosene Plus and it is completely different quality. It is a little bit thicker, very smooth and even along the thread and makes much better looking stitch.
I am sewing more and more and need advise on a good quality threads too. What kind of threads are you using for stitching?

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Irina Grace
English is my Second Language

Marie367
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In reply to Irina Grace <<


Date: 3/10/13 9:49 PM

You have gotten good advice here. I don't think thread will make that much difference if the thread is not defective in some way, it is threaded correctly and it is not catching on anything.
I have another idea-
You said you changed both tensions? You adjusted the little screw on the bobbin case? If you did adjust the bobbin, you need to start over if you do not have a nice straight stitch. It might be hard to tell if the machine is off (timing or whatever) or if it is just the tension because you adjusted it too much. Do you have any other thread? I would start with some scraps of fabric in a contrasting color to your thread (a light color) so you can see what is going on. Make sure the upper thread is threaded correctly and you have a good needle in the machine. Then do the same with the bobbin using a different thread color if possible. Try setting the upper tension about mid way. Sew a straight stitch. Check the tensions. If the bobbin thread is messed up, then adjust the bobbin tension by adjusting the little screw-do this in very small increments-a quarter of a turn. Try to figure out if you need it tighter or looser by checking the stitch. If the bobbin thread shows on top then you probably need to loosen it. Then sew again-usually clockwise is tighter. If it is off a little you can probably fix it yourself. If all you get is thread nests and you have checked everything else, there is probably something off-maybe timing or something catching the upper thread. It can be difficult to get it fixed when you get the bobbin tension off. The last time I did something like this it took me an hour of sewing and adjusting.
I use Coats & Clark thread for most sewing that I get half price at Hancocks or JoAnns. HTH

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