Bernette Airlock b64 - Sew Outer Curves and Circles

Practical overlocking
76
2020-09 EN 5040064.00A.04
9.8 Sew outer curves and circles
Due to the Differential Feed, the seam can be pulled or pushed into shape for flat, round edges.
> Cut away the seam allowance in one place along the length of the presser foot.
> Start and end the seam at the cut seam allowance.
– if seam waving out happens: set the Differential Feed to 1.5 − 2.
– if puckering happens: set the Differential Feed to 0.7 − 1.
> At the seam end, sew 1 ─ 2 stitches over the seam beginning.
> Lower the needle and raise the presser foot.
> Turn the fabric off to the left of the presser foot.
> Lower the presser foot and sew over and beyond the fabric.