The upper thread tension could be set too tight. Set the tension to the best thread tension setting or less. Make sure the spool of thread is installed correctly using the correct size spool cap for the size of spool. … Check that the bobbin is wound so that it about 80% full and that the thread is evenly wound.
What to do when thread keeps breaking while sewing?
Sewing machine manufacturers suggest that you don’t mess with your bobbin thread tension too much, but you should adjust your upper thread tension if your thread keeps breaking while you sew. If your tension is too tight, it can pull your thread and break it. Turn your tension dial counterclockwise to loosen it.
Why does my lower looper thread keep snapping?
The lower looper thread could be breaking due to the threading of the machine. 1. Make sure the unit is threaded correctly. – When threading the lower threading lever, make sure the thread is just laid to the side of the lever and not threaded through the lever.
How do you fix Overlocker tension?
Start sewing, and slowly turn the tension dial for one of the threads to a lower number. As you sew, examine the stitches to see the change in tension. The thread that has been adjusted will be slack or loose. Return the tension dial to the original setting.
What thread tension should I use?
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.
What tension should I use for cotton?
Cotton requires a moderate tension setting, usually between three and four.
How do you adjust upper thread tension?
To increase your top tension if it’s too loose, turn your knob so that the numbers are increasing. Try ½ to 1 number higher, then test the stitches on a piece of scrap fabric. Continue until it looks even on both sides and you can no longer see the bobbin thread on the right side of the fabric.
What tension should I use for thin fabric?
Use size 70/10 for really thin cotton like voile, size 80/12 for light to medium weight cotton, and 90/14 for thick cotton like denim.
Why does sewing machine keep jamming underneath?
Lack of tension on the upper thread
However certain you are that the problem with the machine is most likely due to a huge tangled mess of thread in the bobbin underneath the fabric, the most common reason for the jamming is usually the lack of sufficient tension in the upper thread.
What needles for serger?
A serger may take a special needle such as an industrial needle with a flat or round shank. Other sergers may use the standard machine needle sizes 11/75 or 12/80 as well as special needles such as ballpoint, metallic or embroidery.
Why is my Overlocker gathering?
The seam looks gathered!
Or it could be because the presser foot isn’t holding the fabric down firmly enough – turn the presser foot pressure dial up if your machine has this feature.
How do you adjust the overlock stitch width?
If the overlock uses two needles, the stitch width can be adjusted by removing one of the needles. This can be done only when a three–thread stitch is used. The stitch length of an overlock machine may vary from 0 to 5 mm (0–0.2 inch). The stitch can be adjusted by turning a dial, moving a lever, or loosening a screw.