Pfaff Knit-Edge Foot (Fits Category B, C, D, E, F, G and J)

Use an overlock stitch pattern appopriate 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.