The thread tension appears to be correct - meeting in middle. I have changed needle to 14 from 12. (new needle) Pressure foot set at 3. I have changed tension between 3 and 5 but still puckers.
You might try a 'walking' foot-the kind that quilters use. This will even out the push/pull between the presser foot and feed dogs and may ease the puckering problem. Also, make certain that you use a Sharp needle and change it out again if you are still having trouble (sometimes even a new needle can be damaged from the production process).
Testimonial: "Impossible to use a walking foot when piping. Have tried new needles to no avail. Thanks anyway."
SOURCE: i have an 1130 bernina
The 1130 does not have a consumer adjustable presser foot. Check to be sure you are using the correct presser foot .Some feet are slightly different in height which is how the pressure is regulated. If this is not your problem it will need to be seen by a technician.
sewman7
SOURCE: bobbin thread/feed dog eating fabric
This is a very common problem with really lightweight fabric and can often be cured (if doing straight stitching) by using a straight stitch needle plate and foot. The wider needle plate and foot openings on newer machines give the machine/thread a wider area to pull the fabric into the machine. By using a straight stitch plate/foot you remove the wide opening, eliminating the majority of the problem.
Also - try using a specially coated needle (Teflon or other non-stick finish). The thread feeds more smoothly through the needle and the needle more smoothly through the fabric, causing less drag into the needle plate opening.
Hope this helps. Don't hesitate to respond to this if you have further specific questions. We're always happy to help
Happy stitching,
Kim & Linnette
www.sewingexpressions.com
SOURCE: I keep getting loops (from the upper thread)
The machine will need to go into the shop as it appears the timing needs to be adjusted.
If you are mechanically inclined, you can find a tutorial and graphic at sewusa.com for adjusting the timing.
SOURCE: I keep getting loops (from the upper thread)
try a different bobbin and make sure bobbin is inserted correctly. mine has done that before and I had the bobbin in backwards
SOURCE: I have recently bought Singer Quantum 9940 and I
1. Make sure your needle is correct for the fabric. Go buy some good needles in several sizes. You'll need a 90 for jeans, rounded points for fine fabrics... get a few sizes. Your manual should provided you with clues to the right needle for the fabrics. (BTW... there really is no such thing as a Universal Needle... toss it.)
2. Re-read your manual and carefully follow the instructions on threading the bobbin and the upper thread...
3. Check your tension on the upper thread... it is too loose for the application. The tension on the bottom thread is handled by a spring on your bobbin case or race. If you do not have that threaded properly you'll have problems. Same with the direction the bobbin turns... have in it backwards... problems.
Barring all these things... It might be time for a qualified Singer repair person to look at it. Sadly Singer has seriously lowered it's standards in the last 20 years.
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