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3.4 Sewing foot pressure
18
Standard checking
The figures on the setting wheel 1 gives the sewing foot pressure
in "N".
(1kp = approx. 10N).
The required sewing foot pressure depends on the following
parameters:
·
Sewing speed
·
Damping characteristics of the material to be sewn
·
Number of plies (layers forming the material to be sewn)
The material that is to be sewn must not "swim".
However, the sewing foot should not exert more pressure than
necessary, otherwise a strong shifting of the ply occurs (ruffling).
Correction
–
Set the sewing foot pressure by turning the handwheel 1.
Increase the pressure
Decrease the pressure
1
= Turn it clockwise.
= Turn it counter-clockwise.
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