Baby Lock Enlighten (BLE3ATW-2) Instruction and Reference Guide - Manual (Page 26)

Flatlock seams are most suited to fabrics which do not ravel such
as interlock knits, tricot, sweatshirt fleece and synthetic suede.
The needle thread is carried below the fabric and to the cut edge
of the fabric. The lower looper thread rides along the cut edge of
the fabric for stability. The edges pull open and flatten within the
stitch for a non-bulky join. Be sure to sew a test sample first to
determine whether the stitch will have the strength to hold the
seam without the fabric pulling away.
Move the stitch selector lever to "D".
For the right needle 3-thread flatlock, follow the suggested set-
tings and the threading diagram below.
3
T
H
R
E
A
D
O
V
E
R
L
O
C
K
24
3-Thread Flatlock
NEEDLES
right
LENGTH
2-3
WIDTH
3.0-5.0
STITCH
SELECTOR
D
WAVE
SELECTOR
OVERLOCK