Baby Lock Imagine Wave (Previous Model) (BLE3ATW) Instruction and Reference Guide - Manual (Page 19)

Your Baby Lock serger is equipped with differential feed.The set of
feed dogs work independently in order to ensure smooth sewing on
all fabrics (fig. A)
When the differential feed adjusting lever, located at the machine's
right, front edge is set on "N" for normal feeding, the feed dogs move
the same distance. This is the setting to use for most fabrics and
applications (fig. B).
When the dial is set above "N", the front feed dog will feed more fab-
rics than the back. This is because the front feed dog moves at a
greater distance than the back feed dogs. As a result, the fabric
becomes compressed or eased, as the diagram on the front cover
indicates. This action can eliminate wavy seams in stretchy fabrics
or those cut on the bias grain.
At the maximum setting of 2.0 (fig. C), the differential feed can gath-
er a lightweight fabric to nearly double fullness (fig. D).
The front feed dog is actually feeding in twice as much fabric as the
back feed dog is feeding out. To maximize the gathering effects,
use the longest stitch length setting. Fabric weight will affect the
gathering. Test stitch for desired results.
When the differential feed lever is set below "N" (fig. E), the front
feed dog moves less distance than the back feed dog. This adjust-
ment stretches the fabric slightly as it is sewn pulling it taught as it
enters the needle. The lower settings prevent puckers on lightweight
fabric (fig. F), add more stretch to swim wear, active wear, and can
be used to create a lettuce edge (see page 36).
M
A
C
H
I
N
E
S
E
T
T
I
N
G
S
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Differential Feed
A
B
C
E
F
D