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Types
of
Fabrics
Mercerized
Silk
Needle
Cotton
j
Size
0
Fine
Fabrics
80
60
to
such
as
georgette,
chiffon,
batiste,
to
000
or
voile,
lawn,
silk.
100
70
twist
Lightweight
Fabrics
70
such
as
dress
silks
and
cottons,
A
&
B
to
80
sheer
woolens,
shirting,
dra-
twist
80
peries.
Medium
Fabrics
50
such
as
lightweight
woolens,
to
B
&
C
90
madras,
muslin,
brocades,
heavy
twist
70
silks
and
rayon,
gabardine.
Heavy
Fabrics
40
such
as
coating,
denim,
corduroy,
to
C
&
D
100
slipcover
fabrics,
bed
tickings,
twist
50
lightweight
canvas.
Very
Heavy
Fabrics
24
90
such
as
heavy
tickings,
canvas,
to
E
to
overcoating,
sailcloth,
up-
twist
40
110
holstery.
Synthetics,
Rayon,
Acetate
Determined
by
Determined
including
nylon,
orIon,
dacron,
weight
of
fabric
bythreodsize
plastics,
etc.
40
to
50
60
to
80
i’ssmene
an’
‘7ha?
$ies
The
appearance
of
the
finished
seam
is
dependent
on
the
correct
relationship
between
needle,
thread
and
fabric.
Select
the
proper
thread
sizes
and
needles
from
this
chart.
The
some
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.
12