Three-thread flatlock stitch, 21, two-thread flatlock stitch, Two-thread flatlock stitch – SINGER 14U285B User Manual
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20. Three-thread flatlock stitch
Flatlock stitch can be used for various applications.
• Use ordinary overedge throat plate.
• Use left or right overedge needle.
• The right looper thread forms the decorative stitch, therefore fine and unobtrusive threads should be
used for the needle and left looper.
Example; Right looper thread..........................Wooly nylon or decorative thread
Left looper thread .......................... extra fine
Needle thread ..................................extra fine
Stitch length................................. 2—3
Note: If heavy [hroad such as pearl
cotton is used in tlic
the 2nd thread
as shown on
Set thread tensions to normal sewing condition for
1 needle, 3 thread overedge stitch and make a test
sample. (See page 20)
• When making above adjustment, the right
+u j +
Right looper ^-------
Left looper thread
looper thread tension should be adjusted as
light as possible.
• Make a test sample with two ply fabric.
Turn left looper thread tension dial (yellow)
toward (+) mark so that the right looper thread
will come as close as possible to the needle thread
as shown in figure 1.
Turn needle thread tension dial (green) toward (—)
\ H \ H \ i i ' '
mark so that right looper thread, left looper thread
and needle thread will all come to the edge of
fabric as shown in figure 2.
Open looper cover.
Turn hand wheel toward you to bring movable
knife to its lowest position and place it in the non-
operating position. (See page 11)
Attach edge guide to machine.
Fold fabric in half with the wrong sides together.
Place fabric under the foot with the fold resting against the wall of edge guide. Adjust edge guide so
that it is positioned in the center of the seam width as shown in the sketch.
When stitching is completed, unfold fabric and press the stitching from the underside of the fabric.
21, Two-thread flatlock stitch
You can also flatlock with the 2-thread overedge stitch. Set tension as shown on page 18. Heavy decora
tive threads such as pearl cotton are not suggested for 2-thread flatlocking.