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

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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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If you want to get right to work, skip the troubleshooting and answer as many questions as you can or have time for. It is possible that your problem is the design and not the machine. Try one suggestion at time so you what helps and what doesn't. Questions first:

  1. Is the machine brand new, or new to you?
  2. Do you have your manual?
  3. Do you been embroidering by machine for a while, or are you just learning?
  4. Does this problem occur with every design you sew, or is it one particular design that you are having trouble with?
  5. How many total stitches are in the design you are trying ot sew?
  6. What kind of thread are you using (rayon, poly, sewing?)
  7. Did you buy the machine from a dealer, and if so, does it have a warranty?
  8. Have you taken lessons on how to use your machine for both sewing and embroidery?
  9. Are you familiar with embroidery backings, needles, and threads and how to choose which to use for a particular project?


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after 8 years of sitting, the machine needs to go to the shop so that areas that are inaccessabe to the sewer can be cleaned and serviced by the tech. also check the upper threading of the machine. the tension is changed if threaded incorrectly. bunching under the material is caused by several different reasons. I would first have the machine cleaned and serviced by the tech, and let them know it has been 8 years since use. we all begin walking by taking one step at a time.
del

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