Differential Feed Adjustment - Singer S14-77 Manuel D'instruction

Differential Feed Adjustment

The differential feed system consists of two sets of feed teeth
arranged one behind the other (A). Both feed teeth work
independently of each other to provide good results when
sewing on speciality fabrics. When the amount of feed by the
front feed teeth is changed in relation to the feed by the rear
feed teeth it will "stretch" or "gather" the fabric.
Use the differential feed to prevent stretching or distortion of
knit fabrics and puckering of lightweight fabrics.
For overlock stitching on normal fabric, set the differential
feed to 1.0 (B).
Gathered Overlock (C)(Stretch, Knit Fabrics)
When overedging stretch fabric, such as knits and jersey,
adjust the differential feed to a number between 1.0 and 2.0.
The setting depends on the fabric being sewn. Test sew with
different settings before sewing on your project.
Stretch Overlock (D)(Light Weight Fabrics)
When overedging light woven or loosely knit fabrics, such as
silk and silky knitwear, adjust the differential feed to a number
between 0.7 and 1.0. When sewing, apply gentle tension to the
fabric by holding the seam lightly in front and back of the
presser foot. The setting depends on the fabric being sewn as
well as the desired amount of stretching. Therefore, test sew
with different settings before sewing on your project.
Fabric
Stretch fabric
(knit, jersey)
Non-stretch fabric
(cotton, denim)
Light-weight fabric
(Silk, silky knitwear)
12 – Getting Ready to Sew
English
Differential Feed Adjustment
1.0–2.0
1.0
0.7–1.0
Result