Pfaff – 820790096 – Knit Edge Foot
You can simultaneously stitch and finish heavy knit fabrics or imitation furs with this foot.
Use an overlock stitch pattern appropriate to your fabric. The front of the Knit-edge Foot has sides of different heights, making it simple to sew thick seams on knits and fur. For a perfect seam on knit fabrics (e.g. shoulder seams), sew over a cord or ribbon, pulled slightly taut into the seam. This will give the seam additional strength and keep it from stretching out of shape. For a perfect seam on bias pieces, add a yarn with slight tension and overlock it at the same time.