Why is the underside of my sewing loose?
Probable Causes: – Top or bobbin thread is not set correctly. – Make sure that you are using a bobbin designed for this machine. …
Why is my sewing messy?
As “thread bunching” occurs on the underside of the fabric, some people think it is due to the lower thread. They check whether the bobbin is sitting correctly in the bobbin case or even replace the bobbin. This does not usually change the situation.
If your thread is pulled tight on the underside and not forming an even stitch then (counter-intuitively) it’s usually the top thread tension that’s wrong. Sometimes very lightweight fabrics such as sheers can get dragged down into the machine so it’s a good idea to use a straight stitch plate.
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. Turn your tension dial counterclockwise to loosen it.