White 7234 - Roll Hemming Procedure; Setup and Tension Settings for Roll Hem

5.
ROLL
HEMMING
Roll
hemming
is
achieved
by
adjusting
the
thread
tensions
so that
the fabric
is
overiocked,
and
folded
under
to
1.5
mm in
width.
It is ideal
for
use with
thin materials.
(1) Remove
the
left needle.
(Sew
only
with
the
right
needle)
(2)
Change
the
presser
foot and
the
needle
plate
for roil
hemming.
For
roil
hemming
sewing,
use
the
presser
foot
marked
“B”
and
the
needle plate
“B’ (The
presser
foot “A”
and
the
needle
plate
“A”
are
for
normal
sewing).
(3) Set
the
bite width
between
4.5and
5.5.
(4)
Set
the stitch
length
adjuster
to
1.
(5)
The
standard
thread
tensions
are
as
follows:
Dial©:
Needle
thread
1 —4
tension.
Dial
©:
Upper
looper
thread
1 — 4
tension.
Dial
®:
Lower
looper
thread
5— 8
tension
For
roll hem
sewing,
pass
the
nedle
thread
to
the
left
side
(solid
line)
of
thread
guide
®
illustrated.
[For
normal
sewing,
pass
it
to the
right
side
(dotted
line) of
thread
guide
®.]
At
the
begining
of
sewing,
gently
pull
the
end of
the
thread chain.
For
roll hem
sewing,
pull
the
material
gently
towards
the rear
of
the
machine,
and
you’ll
get
the
neater
stitches.
(1)
—14—