Question about Bernina Artista 180

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Thread knotting and bunching on the backside of design

I have been trying to embroidery and all of a sudden my machinge is knotting and bunching on the back side of the design. From the top it looks great but when you take the hoop out the back is horrible. What can I do? This is very frustrating.
Moompye

Posted by moonkitty on

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bbracevid

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Knotting or looping on the bottom is most likely from not enough upper thread tension or way to much bobbin thread tension.
When you thread your machine, make sure the thread goes inside the second thread guide where the thread comes down in front of your machine. The presser foot must be in the up position for that guide to open and allow the thread to correctly "seat" in that guide.
Try this...Before you thread the needle, pull on the thread. With the foot in the up position there should not be any tension at all...lower the foot and you should have to tug slightly on the thread to get it to move. If lowering the foot does not increase your upper thread tension then you are not in the thread guide correctly or you have a mechanical problem with the upper thread tensioner.
One last thing to check. You can get a wax build up or lint packed in the thread tension guide. This is a common problem. Run a Q-tip through the guide and clean it out. If that guide gets built up with wax or lint it will not clamp down on the upper thread and you will not have the correct tension.
With the bobbin case threaded, pull out the thread. It should not be super tight or loose. It should be like pulling Scotch tape off a roll as far as tension goes.
Get your upper and lower thread tensions set up correctly and your problem will be solved.
Good luck, bushvideo

Posted on Sep 27, 2008

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Hi, and welcome to FixYa. If I understand your problem, the needle goes in and out of your fabric, and the embroidery hoop moves, but the machine does not actually start embroidering your design right away....did I get it right? If have time to answer a few questions, I can give more accurate instructions.

  1. How long have you had your machine?
  2. How long have you been doing machine embroidery?
  3. Do you have a manual for your machine?
  4. Look at the back side of your design - do you see lots of bobbin thread, or hardly any?
  5. Have you taken lessons for your machine or for embroidery?
  6. When your design is finished, can you where the machine skipped stitches?
Here a couple of things you can try (if you have already):

  • Make sure you use an embroidery needle, not a universal. In most cases, you should use a size 90. Change your needle after each project. A blunt need can cause your machine to skip embroidery stitches anywhere in the design.
  • Rewind or replace your bobbin. Make sure you use bobbin thread in your bobbin when you embroider - it is thinner and gives you better tension. If pre-wound embroidery bobbins are compatible with your machine, I recommend that you try one and compare the result with designs sewn using the bobbin thread you've been using.
  • Normally, you should loosen your tension a little bit when you embroider. When you look at the back side of your embroidery, you should see more bobbin thread than embroidery thread.
I owned an embroidery business for several years, and I have six different embroidery machines of my own - so with a little more info from you, I think I can help.


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