Why isbobbin stitch on top weird how do i fix

So your set up to sew zig/zag and only get the zig or the zag : )


Could be top thread tension is too high. Switch to a straight stitch and reduce tension until top thread starts to appear on bottom. Then go back to zig/zag and see if it sews properly.


If still dropping stitches, check the needle is not bent and is fully inserted into the holder. Clean the bobbin, hook, and race per machine instructions. Try reducing the stitch width and see if that makes any difference. If still not right then timing may be off.

It sounds like maybe the bobbin tension is too tight. It is pulling the top thread down to the bottom of the fabric. If you tighten the top tension it causes the fabric to pucker. If you loosen the top tension, more of the top thread will show on the bottom. Correct tension is when the top and bobbin threads meet in the middle of the fabric.

Understanding Thread Tension on Your Sewing Machine

suggestions
if the zig zag stitch is not working could be something wrong with the cam
try taking the bobbin out & use a different bobbin
try a new needle, make sure the needle is correct for the fabric being sewed
could also be a problem with the feeddogs

Do you have it on zig zag or maybe it is in one of the hem stitches. Make sure you have not selected a special stitch. Sometimes with a small width setting it looks like no zig zag, then when you increase the length you see it is not.

try moving it with the stitch width set to #1

it's very possible that the machine is slightly out of time & needs to be service at a sewing machine shop
is the fabric & thread & needle compatable with each other?
did you use every thread guide when threading the machine?
is the bobbin in correctly?
is the bobbin warped?

FIRST > Make sure your bobbin case is threaded correctly...

NEXT
For normal straight sewing the top tension should be around 5, for zigzag or satin stitch you need to lower your upper thread tension a bit. Try it at 4, if it still pulls your bottom thread to the top try it at 3 etc...

It sounds like your tensions are out of adjustment. Your upper tension should be between 3-5 and make sure the tension in your bobbin case is not too tight as well. Pull the thread through the bobbin case and make sure it comes out with a small amount of resistance. If no resistance, tighten the tension just a bit, if too much resistance, loosen it just a small bit at a time.

When ever a machine is jamming up the bobbin thread, it is a result of your top tension. It is either set to low (under 4), or the thread has come out of the take-up lever. Check your threading, fromt he spool pin, down to 2 and up to 3. Three is the take up lever. From the take-up lever down to 4. Set the thread behind the thread guide and thread the needle form front to back. Low quailtu thread 9dual duty or all purpose) can also create this problem.

thanks,

Bonnie

Because it is almost a straight stitch but the needle continues to move in a zig zag fashion is reason to believe it is in a long stitch. By changing the number of stitches per inch there will be a very noticeable looking zig zag stitch.