Ensure your thread take-up lever is in its highest position, attach your spool of thread, and then pull your thread through your tension discs and thread guides according to the instructions in your user manual. Then, pull your thread through the eye of your needle and leave a four-inch tail of thread.
If the thread tails that come out of your bobbin are shorter than two inches, they may get sucked into your sewing machine when you begin to sew. This can cause thread bunching underneath your fabric. Try to start with at least three- to four-inch thread tails or hold the thread tails until you have sewn a couple of stitches.
Your thread tension should be adjusted for different weights of fabric and thread. Make sure that you are using the same weight thread in both your bobbin and upper thread. If your tension is too tight, it can pull your thread and break it. Turn your tension dial counterclockwise to loosen it. The feed dogs are what pull your fabric through your sewing machine. They are the little teeth you see sticking up from your throat plate underneath your presser foot.
However, if you forget to raise your feed dogs back to their normal position after a sewing project, you can get bobbin thread looping underneath your fabric the next time you sew. Without your feed dogs, your fabric will not move, and your stitches will keep forming in one location.
Your feed dogs need to be up, and your presser foot lowered, to properly feed your fabric through your sewing machine. If you forget to put your presser foot down before you sew, thread looping or bunching can happen underneath your fabric. Many computerized sewing machines will not sew if you do not lower your presser foot first. Your spool cap prevents your spool of thread from vibrating and bouncing out of control while you sew.
Lint builds up in your bobbin case as you sew. Hopefully, you now know how to solve this problem and make sure it no longer happens. Save my name, email, and website in this browser for the next time I comment. I understand that BERNINA will process my comments as well as my first and last name for publication and direct marketing purposes and link these to information collected by BERNINA for direct marketing purposes or information derived from the comments such as captions, tags.
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Thank you for your feedback, I will forward it to our team! Hi I have just bought the B and everything was fine for the first garment but now when I top stitch or understitch the machine needle will do a sudden stutter part way through and then I will get a tangled mess underneath or really loose stitching.
This is my first electronic and most of my clothing I make is topstitched so very worrying. Does the needle size fit to the fabric? Maybe you have to adjust the size. Hi Been teaching years with Berninas and know about right needle for right fabric. This is a new machine.
Next couple I have. Moved the needle over two to the left or right and after a short time I am sewing slowly the needle jumps as you can see from the picture to the side with a glug, and then thread jams underneath. Was topstiching edge a zip and it jumped to the middle of the foot and broke a needle just now. Had to switch the machine off. Also noticed that if I stop in the middle of a seam, the needle goes back into the stitch just made and then goes forward, rather than going forward to form a new stitch.
The machine is unusable as it is. I would propose to visit your deler and check the machine, because he can find out the reason, why this happens! Thank you so much! My thread started bunching midway through a piece of work and I thought something must have broken…. As you so rightly comment….
Having read this I thought it was extremely enlightening. I appreciate you spending some time and effort to put this article together. A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath.
By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads. In this case, it might be necessary to loosen both the bobbin tension AND the top tension. By loosening both the top and bobbin tensions, both sides of the tug-of-war become equal, allowing a good stitch without breaking or looping. View All. So Fine! Scissors Superior Snippers. Stabilizers Dissolve. Superior Blog View Our Blog. Search Site. To loosen or tighten the bobbin tension, turn the large screw in small, quarter turn increments.
When using a very smooth, fine bobbin thread the preset tension may not be tight enough to apply adequate pressure on the thread. You may have heard the term backlash before. Most people tend to reach this conclusion, and eventually, they cause more damage to the sewing machine. Whenever this happens, the problem lies with the needle. If the needle is not threaded correctly or the presser foot is up, you risk breaking the thread and subsequently damaging your sewing machine.
Also using the wrong needle for a piece of fabric can make your thread bunch, for example, using a sharp needle for a knit fabric or a ballpoint needle for a woven fabric. If you do this, you run the risk of bunching the thread under the material and in turn ruining your sewing experience.
The throat plate is the metal cover housing the bobbin. The sewing machine throat plate has holes or slots for the needle to pass through as it moves up and down to stitch the fabric. It accommodates the different needle positions and stitches that have been made available on the machine. When the throat plate is filled with debris and is forced through these holes, they bunch up the thread under the fabric and in turn damage the needle and the material.
If the bobbin thread is stuck underneath the pieces you are sewing when you begin to sew, and the threads are stuck under the bobbin area, the needle and feed dogs will push them under the throat plate, where they can cause jams or a big wounded ball of thread on the backside of your fabric. Sewing machine needles are one of the most common parts of your sewing machine, and they are easily changeable.
Their working mechanism determines how your machine form stitches. You must understand how every part of your sewing machine needle works; this will help you in selecting the right needle size for each of the fabrics you are working on and thus prevent any damage.
Knowing about the sizing information on the needle packages will help you purchase the correct size. All sewing machine needles have the same parts. The variation in needles is determined by the shape of the parts and the length of each component. There are various types of sewing machine needles, and each is designed to work best with a specific kind of material.
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