Bobbin threat loose - Sewing Machines

If your bobbin winder is not working correctly, you can pick up a stand-alone bobbin winder (one brand is called Sidewinder) online or at most franchise fabric stores, ie Hancock's or JoAnn's, for around $25.

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try loosing the top thread tension,, if that doesn't work then try adjusting the bottom thread tension.

Your thread tension wheel may be set to too high of a tension, which will cause the thread to pull out from the bobbin. Try a lower tension setting.

If set too low, then threat from the top end would hang loose and possibly snag, instead.

For spandex you will probably want to use a size 70 needle for stretch fabric. You should be able to leave your tension settings on standard tension but may need to go for a slightly shorter stitch length.
try stitch length of 2.5 or 3
tension of 3.5
check your bobbin tension, to do this thread the bobbin and suspend it in the air holding the thread. If the bobbin falls to the floor the tension is too loose. If the bobbin hangs in the air and you give a gentle tug on the string the bobbin should slide along the thread an inch or so. If it doesn't budge it's too tight.

When you say the thread is not the same on top as the bottom do you mean you are using different threads or that the stitches are coming out different on the top to the bottom of the fabric?

Check for thread caught under silver guide, may have got jammed in there.

do you have a manual?
try changing the needle
rethread the machine--make sure the presser foot is at it's highest
position before you rethread
take the bobbin out & put in back into the bobbin case making sure it
goes in the correct way
if the tension is too tight loosen if off a number or letter,,
if the tension is too loose tighten it one number or letter at a time
till the stitch becomes better

Check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out.

double check the needle hasn't moved as if its not in the correct position it will not go low enough to pick up the bobbin thread.
Make sure you have threaded top properly and the bobbin in put in the right way, each machine has its own direction the bobbin thread should come out ( eg clockwise)

Hi. It may be that you need to adjust the tension. Put a different color thread on top than is in the bobbin and sew a couple of inches, then check. I suspect you'll find that the top thread is the one that is loose and knotting up. (It's hard to tell unless you're using two different color threads.) If that's the case, your upper tension needs to be tighter. Tighten it just a bit, then sew a few more inches and check again. Repeat until you don't see any of the top thread on the bottom (or maybe just a little bit) or the bobbin thread on the top (or maybe just a little bit.).

Hope this helps!

Robbie

take out the bobbin (thread holder) beneath the sewing area. Clean that cavity with a brush or cotton/soft cloth. Refill the bobbin with new thread and put it back in the cavity. I hope it will solve your problem.