Recommended Needle And Thread Sizes - Pfaff 92 Instruction Book

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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 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.
Mercerized Needle
Types of Fabrics Silk
Cotton Size
Fine Fabrics
0
such as georgette, chiffon, to
to
-or
000
batisie, voile, lawn, silk. 100 70
twist
Lightweight Fabrks
70
such as dress silks and
A & B
to
80
cottons, sheer woolens,
80
twist
shirting, droperies.
,
'5
Medium Fabrics
such as lightweight 50
B&C
woolens, madras, muslin, to 90
twist
brocodes, heavy silks
70
and rayon, gabardine.
Heavy Fabrics
such as coating, denim,
40
C&D
corduroy, slipcover fabrics
to 100
twist
bed tickings, lightweight 50
canvas.
Synthetics, Rayon, Acetate
Determined
Determined by weight
including nylon, orIon,
of fabric 40 to 50
by thread size
dacron, plastics, etc. 60 to 80
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