Flatlock
The flatlock forms loops on the upper side of the seam and stretch stitches on the underside.
- Set the machine for a 2- or 3-thread flatlock.
- Sew two layers of fabric together (wrong side on wrong side).
- Carefully separate the two layers of fabric.
- The two fabric edges now lie flat on top of each other at the stitch width of the flatlock.
Flatlock Narrow
A narrow flatlock is the result when the Right Overlock Needle (RN) is inserted.

Flatlock Wide
A wide flatlock is the result when the Left Overlock Needle (LN) is inserted.
