Sewing Machine Not Sewing Straight: Separate Feed Drift From a Stitch-Formation Fault
When a sewing machine will not sew straight, the symptom can mean two different things: the fabric path itself veers, or the fabric tracks normally while the individual stitches look crooked or malformed. Start with a basic straight-stitch baseline on stable woven scrap, verify the user-level needle, foot, and feed states required by the exact