Originally Posted by DeniseP
This seems to be happening more and more lately until yesterday I wanted to go into the cellar and get my husband's biggest hammer and do something I proabably would have regretted, but at the same time would have been sooooooo satisfying.
Give your machine a good dusting with a large brush - especially in the bobbin race, and make sure that there is no hidden bit of thread caught there. Change the actual bobbin as well. Change the needle and make sure you re - thread from the beginning. If nothing is hindering the flow of the thread, you may have lint in the tension disc.