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Differential
feed
If
differential
feed
adjustment
lever
(34)
is
set
to
0.5,
the
front
feed
dog
moves
half
as
fast
as
the
rear
feed
dog,
i.e.
the
front
feed
dog
feeds
through
only
half
as
much
fabric
as
the
rear
feed
dog.
As
a
result,
the
fabric
is
stretched.
28
The
differential
feed
consists
of
two
feed
dogs
(A
+
B),
arranged
one
behind
the
other,
which
move
the
fabric.
Adjustment
lever
(34)
regulates
the
movement
of
the
front
feed
dog
(A),
and
thus
the
amount
of
fabric
to
be
fed
through.
It
can
be
adjusted
within
the
range
0.5
and
2.0.
The
standard
setting
is
1.0,
by
which
the
front
feed
dog
(A)
moves
synchronously
with
the
rear
feed
dog
(B),
i.e.
the
front
and
rear
feed
dogs
both
move
the
same
amount
of
fabric.
Note:
The
effectiveness
of
the
differential
feed
also
depends
on
the
stitch
length
selec
ted
and
the
type
of
fabric
used.
Fashionable
touches
can
also
be
introduced
in
this
way,
such
as
the
wave
effect
when
using
rib
knit
(B).
/
This
prevents
the
seam
from
becoming
ga
thered
when
sewing
very
delicate
fabrics
such
as
silk
and
taffeta.
The
result
is
a
smooth
seam
(A).
32


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