Why does my thread keep breaking?
I am semi-new to sewing and I am trying to make a bag out of denim. I have a nice White brand machine that is supposed to handle denim. I have been breaking thread for over an hour now and don’t know why. I have tried all purpose thread with the 90 needle and upholstery thread with the denim needle (100) and all combos between them. My pressure foot tension is correct per my instruction manual and I am at a 3 stitch length and 2.5 stitch width. The thread kind of separates (both sizes) and part gets bunched and eventually breaks. It will stitch about 3 stitches max before this happens. Even when I tested it on 1 thickness as a sample.
What am I doing wrong? Any ideas?