Singer One Instruction Manual 18 - Page 50

Differential

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16. DIFFERENTIAL FEED • Differential feed is a system which "stretches" or "gathers" the fabric, when amount of feed of front feed dog in relation to the rear feed dog is changed. • The differential feed ratio ranges from 1 : 0.7 1 : 2.0. Adjustment is made by means of the differential feed adjusting lever pictured at right. • Use of differential feed is very effective in overedging stretch fabrics and fabrics cut on the bias. • Graduation "1.0" is differential feed adjusting lever setting for ratio 1:1. Gathered Overedge • Gathered overedge is most suited for shirring sleeves, yokes, front and back bodices, skirt hems, etc. in stretch fabrics such as knits and jerseybefore assembling into garment. To set the differential feed adjusting lever • Set differential feed adjusting lever knob below graduation "1.0". Setting of adjusting lever knob depends on material being sewn as well as the amount of gather therefore set knob to suit the fabric and test sew before sewing your garment. • When stitch length dial is set at "3" or over, the amount of feed of the main feed dog will change to "3" automatically when adjusting lever knob is set to 2.0. Note: For normal overedge stitching, set differential feed adjusting lever knob to graduation "1.0". Shirring & shirred seams • Attach (optional) shirring foot • Set machine up for 4-thread mock safety stitch (page 67). • Set differential feed to 2.0 • Sew along edge of fabric togather. Note: For shirred seam place fabric to be gathered under the foot (1) place top layer of fabric in opening (2) located at front of foot. Lower foot & begin to sew. 49 1. 6, 1.6 2

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16.
DIFFERENTIAL
FEED
•
Differential
feed
is
a
system
which
"stretches"
or
"gathers"
the
fabric,
when
amount
of
feed
of
front
feed
dog
in
relation
to
the
rear
feed
dog
is
changed.
•
The
differential
feed
ratio
ranges
from
1
:
0.7
1
:
2.0.
Adjustment
is
made
by
means
of
the
differential
feed
adjusting
lever
pictured
at
right.
•
Use
of
differential
feed
is
very
effective
in
overedging
stretch
fabrics
and
fabrics
cut
on
the
bias.
•
Graduation
"1.0"
is
differential
feed
adjusting
lever
setting
for
ratio
1:1.
Gathered
Overedge
•
Gathered
overedge
is
most
suited
for
shirring
sleeves,
yokes,
front
and
back
bodices,
skirt
hems,
etc.
in
stretch
fabrics
such
as
knits
and
jerseybefore
assembling
into
garment.
To
set
the
differential
feed
adjusting
lever
•
Set
differential
feed
adjusting
lever
knob
below
graduation
"1.0".
Setting
of
adjusting
lever
knob
depends
on
material
being
sewn
as
well
as
the
amount
of
gather
therefore
set
knob
to
suit
the
fabric
and
test
sew
before
sewing
your
garment.
•
When
stitch
length
dial
is
set
at
"3"
or
over,
the
amount
of
feed
of
the
main
feed
dog
will
change
to
"3"
automatically
when
adjusting
lever
knob
is
set
to
2.0.
Note:
For
normal
overedge
stitching,
set
differential
feed
adjusting
lever
knob
to
graduation
"1.0".
Shirring
&
shirred
seams
•
Attach
(optional)
shirring
foot
•
Set
machine
up
for
4
-thread
mock
safety
stitch
(page
67).
•
Set
differential
feed
to
2.0
•
Sew
along
edge
of
fabric
togather.
Note:
For
shirred
seam
place
fabric
to
be
gathered
under
the
foot
(1)
place
top
layer
of
fabric
in
opening
(2)
located
at
front
of
foot.
Lower
foot
&
begin
to
sew.
1.
6,
1.6
2
49