When having issues like this, it's best to start from scratch and use a new bobbin and a new needle. Unthread your machine, clean out the bobbin area, insert a new needle, wind up a new bobbin, and then rethread your machine and see how it goes.
Chatterbox Quilts’ Blog
Helping Quilters Learn and Improve
When having issues like this, it's best to start from scratch and use a new bobbin and a new needle. Unthread your machine, clean out the bobbin area, insert a new needle, wind up a new bobbin, and then rethread your machine and see how it goes.