Stitch Variations And Sewing Techniques; How To Sew A Flatlock Decorative Seam - Singer HD0400S Instructions

25. STITCH VARIATIONS AND
SEWING TECHNIQUES

How to Sew a Flatlock Decorative Seam

A flatlock stitch is achieved by adjusting the tension
of the 3-thread overlock stitch, sewing the seam and
pulling the fabric apart to flatten the seam.
The flatlock stitch can be used as a construction
and decorative stitch or for ornamentation only.
(1) Machine Set Up
Remove the left or right needle.
Begin with the machine threaded and tension
balanced for the 3-thread overlock stitch
(page 29).
Loosen the needle thread tension (green or bule)
generously.
Loosen the upper looper thread tension (orange)
slightly.
Tighten the lower looper thread tension (yellow)
generously.
(2) Flatlocking a Seam
Place the fabric wrong sides together to sew a
decorative stitch on the right side of the garment.
Sew the seam, trimming the excess fabric.
The needle thread (green or blue) will form a V
on the underside of the fabric.
The lower looper thread will pull into a straight
line at the fabric edge.
Remove
Needle thread
Upper looper thread
Topside
Remove
Needle thread
Lower looper thread
Underside
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