Operation Manual

Recommended
Needle
and
Thread
Sizes
The
appearance
of
the
finished
seam
is
de
pendent
on
the
correct
relationship
between
needle,
thread
and
fabric.
Select
the
proper
thread
sizes
and
needles
from
this chart.
Mercerized
Needle
Types
of Fabrics
Silk
Cotton
Size
Fine
Fabrics
80
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
8
&
c
madras,
muslin,
brocades,
to
twist
heavy
silks
and
rayon,
70
gabardine.
Heavy
Fabrics
40
such
as
coating,
denim,
cor-
c
&
D
duroy,
slipcover
fabrics,
bed
to
100
twist
50
tickings,
lightweight
canvas.
Very
Heavy
Fabrics
such
as
heavy
tickings,
canvas,
24
E
90
overcoating,
sailcloth,
up-
to
twist
to
holstery
40
110
Synthetics,
Rayon,
Acetate
Determined
by
by
including
nylon,
orIon,
dacron,
weight
of
fabric
Thread
size
plastics,
etc.
40
to 50
60 to
80
The
same
size
threads
should
be
used
in
the
needle
and
on
the
bobbin.
Some
experienced
seamstresses
prefer
a
somewhat
thinner
bob
bin
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.
12