18
Functions and general operating instructions
Cutting width
Narrower cutting width:
If the edges of fine fabrics curl when being sewn, reduce the
cutting width by turning the dial to a lower number.
Wider cutting width:
If the loops formed on the fabric edge are too loose, increase
the cutting width by turning the dial to a higher number.
Differential feed
Your BERNINA overlocker is equipped with a front (1) and a
rear (2) feed dog. The two feed dogs move independently,
and the distance each feed dog travels can be adjusted
independently.
2
1
2
1.5
N (1)
0.7
Gathering effect
This is the most common use for differential feed and is to
prevent waving or fluting in knits or puckers in fine woven
fabrics.
The distance travelled by the front feed dog is greater than
that of the rear feed dog.
The front feed dog pushes the amount of fabric which the
rear feed dog can take up unstretched (knit) or unpuckered
(fine wovens) behind the needle(s) (e.g. 1.5 and 2).
Stretching effect
The opposite effect can be produced to prevent fine nylon
jerseys or closely woven fabrics from puckering.
The distance travelled by the rear feed dog is greater than
that of the front feed dog.
The front feed dog holds the fabric back so that the rear feed
dog can take up the fabric (slightly stretched) behind the
needle(s). (e.g. 0.7).
Adjusting the differential feed
Simply turn the dial in the direction desired for fully variable
adjustments while sewing. Test sew.
2500_DCE_1_englisch_neu 09.10.2007 14:33 Uhr Seite 18
