Feller Felling Foot, 1/8 inch 4mm BF-maintenance so there is no lip

so there is no lip on the surface of the bobbin

but you'd just plug in the controller and sew

These are used for finer materials

When you choose this foot controller

Feller Felling Foot, 1/8 inch 4mm BF-maintenance so there is no lipUse this attachment to create a 1 8th inch flat felled seam because it folds, presses, and stitches the first row of stitches all in one pass. This seam finish not only prevents unraveling or fraying, but makes the seam very strong. It also gives the finished garment a clean finish on the inside. A flat felled seam is commonly found on denim jeans and men's dress shirts as well as on reversible garments. I've even seen this feature instructed in