Differential Feed - Bernina Sergers Owner's Workbook

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Differential Feed:

Gathering & Easing
Fabric .................................................... medium weight cotton, 3" x 12"
Needle ............................................................................. 80/12 Universal
Thread ...............................................................4 cones of serger thread
......................................................................... (yellow, red, green, blue)
Presser Foot .............................................................................. standard
Stitch ............................................................................ 4-thread overlock
Using a fabric marker divide the fabric into 3 equal sections along the
12" side.
Thread the serger for a 4-thread overlock stitch. Fine tune the tensions
for a balanced overlock stitch.
Turn the differential feed dial to 2. Serge to the first mark.
Adjust stitch length to 4mm and serge to the second mark.
Move the thread tension levers up to 8 to increase the needle thread
tensions. Serge to the end of the fabric.
Return the differential feed to "N" (normal).
Return the stitch length to 2.5 (normal).
Move the thread tension levers to return tensions to normal (3-5).
Mark the sample:
Differential Feed 2
Differential Feed 2 & Stitch Length 4
Differential Feed 2 & stitch length 4 & increased needle tension.
Trim and mount the sample.
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