There are several culprits for this ranging from a dull needle, improper threading or tension. The tension in both your upper and bobbin threads need to be even. The bobbin could also be placed incorrectly. More than likely, you forgot to put the bobbin back correctly while cleaning your machine.
Why is my bottom bobbin thread bunching up?
Your Thread Tension Is Too Tight
Make sure that you are using the same weight thread in both your bobbin and upper thread. If you don’t, your tension can be uneven and cause you to get bunched-up thread under your fabric. … If your tension is too tight, it can pull your thread and break it.
Why is my bottom bobbin not catching?
If it is not in the correct position, the needle will not go down and pick-up your bobbin thread. … Also, make sure your bobbin is in correctly (not backwards) and that the upper tension disks of your machine are threaded correctly. Make sure the presser foot is up when seating the thread through the upper tension.
What am I doing wrong with my bobbin?
My Bobbin Moves Slowly Or Gets Stuck
It’s very common to have problems sewing caused by the bobbin case not moving freely or getting stuck, causing jamming or skipped stitches. … It can also occur if the bobbin thread is not attached correctly, the thread has formed a knot or a problem with the bobbin case.
Why is my sewing machine Birdnesting?
The main source of birdnesting or looping is improperly inserted or threaded bobbin or running the embroidery machine with no bobbin. … A tight bobbin tension, together with highly loose needle thread tension, can cause birdnesting. Flagging occurs when the hoop bounces up and down during sewing.
What tension should my sewing machine be on?
The dial settings run from 0 to 9, so 4.5 is generally the ‘default’ position for normal straight-stitch sewing. This should be suitable for most fabrics. If you are doing a zig-zag stitch, or another stitch that has width, then you may find that the bobbin thread is pulled through to the top.
How do I fix bobbin thread bunching up?
Is your bobbin case tension too loose? If you have loosened the screw on your bobbin case to allow for thicker threads you may need to re-adjust it for a regular thread. After the bobbin case has been correctly threaded, give the bobbin thread a slight tug.
How does the bottom bobbin work?
According to Vocabulary.com, “A bobbin is the part of a sewing machine on which the lower thread is wound. The machine makes a stitch by catching the bottom thread, from the bobbin, with the top thread, from the needle.” … The bobbin feeds the thread through the machine to help secure a stitch.
How do you adjust the tension on a bobbin?
To tighten your bobbin tension, turn the tiny screw on the bobbin case a smidgen clockwise. To loosen bobbin tension, turn the screw counterclockwise. A quarter turn or less is a good place to start.
When should I replace my bobbin case?
As long as you take good care of your bobbin case, it will perform well. However, eventually, it will cease to sew smoothly and will need to be replaced. Sometimes people think they only need to replace certain parts of the bobbin case, like the tension spring or the tension screw.