Baby Lock Ovation (BLES8) Instruction and Reference Guide - Manual (Page 15)

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13
Differential Feed
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.
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.
When the dial is set above "N" (fig.B), the front feed dog will feed
more fabrics than the back. This is because the front feed dog
moves at a greater distance than the back feed dog. As a result,
the fabric becomes compressed or eased, as the diagram on the
front cover indicates. This can eliminate wavy seams in stretchy
fabrics or those cut on the bias grain. (fig.A)
At the maximum setting of 2 (fig. C), the differential feed can
gather 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. F), the front feed
dog moves less distance than the back feed dog. This adjustment
stretches the fabric slightly as it is sewn. The lower settings prevent
puckers on lightweight fabric (fig. E), add more stretch to swim wear,
active wear, and can be used to create a lettuce edge. (see page 33)
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