Operation Manual

Mercerized
Needle
Types
of Fabrics
Silk
Cotton
Size
Fine
Fabrics
80
0
60
to
such
as
georgette,
chiffon,
to
000
or
batiste,
voile,
lawn,
silk.
100
twist
70
Lightweight
Fabrics
70
such
as
dress
silks
and
cottons,
A
&
B
to
80
sheer
woolens,
shirting,
dra-
80
twist
peries.
Medium
Fabrics
such
as
lightweight
woolens,
50
B
&
c
madras,
muslin,
brocades,
to
90
twist
heavy
silks
and
rayon,
70
gabardine.
I
H
Heavy
Fabrics
40
I
such
as
coating,
denim,
cor-
C
&
D
to
100
duroy,
slipcover
fabrics,
bed
twist
50
tickings,
lightweight
canvas.
Synthetics,
Rayon,
Acetate
Determined
by
by
including
nylon,
orion,
dacron,
weight
of
fabric
thread
size
plastics,
etc.
40
to
50
611
to
80
Recommended
Needle
and
Thread
Sizes
The
appearance
of the finished
seam
is
dependent
on
the
correct
relationship
between
needle,
thread
and
fabric.
Select
the proper
thread
sizes
and
needles
trom
this chart.
The
same
size
threads
should
be
used
in
the needle
and
on the
bobbin.
Some
experienced
seamstresses
prefer
a
somewhat
thinner
bobbin
thread.
However,
the bobbin
thread
never
should
be
thicker
than
the
needle
thread.
For
embroidery
and
darning
work,
a
No. 50
thread
should
normally
be
used.
14