Pfaff narrow edge foot with idt cat c the narrow edge foot is perfect for precision topstitching and joining lace andor fabric edges together for example attaching lace to a finished fabric edge the metal guide in the center of the foot keeps the two fabrics evenly spaced 1 set machine for zigzag or decorative stitch needle position will vary according to stitching position desired 2 for narrow edge topstitching place the center guide of the presser foot against the fabric edge 3