Baby Lock Lauren (BL450A) Instruction and Reference Guide - Manual (Page 18)

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1. Open the front cover and
rotate the handwheel to bring
the upper looper to its lowest
position.
2. Cut the upper looper thread
just behind the eye of the
upper looper.
3. Remove the lower looper thread from the
thread guide (A).
6. Push on the subsidiary looper with your
finger and rotate it to the left until the tip
of the subsidiary looper is securely
positioned into the eye of the upper
looper.
5. Insert the subsidiary looper
into the hole at the top of
the upper looper shaft.
4. Hook the lower looper thread to
the thread guide (B).
Needle and lower looper threads are
crossing on the edge of fabric.
Correct thread tension
TWO THREAD SERGING
Two thread serging provides a decorative, yet functional seam known as
the flatlock seam. You can flatlock garments ranging from lingerie to fake
fur coats. When sewing with two threads you can achieve a flat, bulk-free
seam. Using it to seam fake-fur fabrics and hand knit fabrics you will find
that the “stitches” disappear into the nap. Enhance the appearance of
flatlock stitch with the use of decorative threads through the looper.
Besides flatlock seaming, two thread serging also provides a sturdy
means of overedging all fabrics.
This can be combined with speciality threads for decorative edges on
ruffles, hemlines, and borders.
Two thread sewing is accomplished through the elimination of two threads
- the upper looper and either needle. NOTE: Use the LEFT needle for a
wide flatlock stitch; use the RIGHT needle for a narrow flatlock stitch.
to convert from 3-thread to 2-thread sewing
Needle
thread
Top of
fabric
Bottom of
fabric
Lower
Looper
Thread
(A)
(B)