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Machine settings
6.4 Adjusting the differential feed
The Differential Feed prevents unwanted seam puckering or seam waves in knitted or stretchy fabrics as well
as the shifting of fabric layers. The rear feed dog always maintains the same speed, while the speed of the
front feed dog can be adjusted. The two feed dogs can be synchronized with each other during the sewing
process so that the fabric is fed as desired, and no waves or unwanted puckering occur.
To enable a «blind operation», the setting range is displayed larger when the machine is running.
> Set the Differential Feed proportion of the front feed dog via the Differential Feed setting.
These setting values describe the transport ratio of the front feed dog to the rear feed dog.
78
Setting for the
Fabric
front feed dog
2
Fine, soft fabrics
1.5
Jersey, sweatshirt, knits
1
Wowen knit and medium-weight dense
fabric
0.7
Fine nylon tricots, densely woven fabric,
lining, satin
Result
Ruffling, puckering, gathering
Slight ruffling, preventing seam waving
Default value
Stretching, preventing seam puckering
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