Pfaff 73 Owner's Manual - Page 13

Recommended, Needle, Thread, Sizes

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Types of Fabrics Mercerized Silk Needle Cotton Size Fine Fabrics such as georgette, chiffon, batiste, voile, lawn, silk. Lightweight Fabrics such as dress silks and cottons, sheer woolens, shirting, draperies. Medium Fabrics such as lightweight woolens, madras, muslin, brocades, heavy silks and rayon, gabardine. Heavy Fabrics such as coating, denim, corduroy, slipcover fabrics, bed tickings, lightweight canvas. Very Heavy Fabrics such as heavy tickings, canvas, overcoating, sailcloth, upholstery Synthetics, Rayon, Acetate including nylon, orIon, dacron, plastics, etc. 80 to to 000 or 100 twist 70 70 A&B to twist 80 80 50 8&c to twist 70 40 to c&D 100 50 twist 24 E 90 to twist to 40 110 Determined by weight of fabric 40 to 50 by Thread size 60 to 80 12 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. 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.

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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