Sewing material, Needles, Sizes – Brother 681B-UG User Manual
Page 12: Thread sizes, Very thin, Cotton: 80~120, Synthetic, Fine mercerized cotton, Light weight, Organdy, jersey, voile, taffeta, synthetics, silk

Relative Chart of Sewing Material, Needle and Thread
SEWING MATERIAL
NEEDLES
SIZES
THREAD SIZES
VERY THIN
Fine tricot, Fine Lace, Thin linen, Silk,
Tulle, Chiffon
9
Cotton: 80~120
Synthetic
Fine Mercerized
Cotton
LIGHT
WEIGHT
Organdy, Jersey, Voile, Taffeta,
Synthetics, Silk
Batiste
11
Cotton: 60~80
Silk: “A”
Synthetic
Mercerized 50
MEDIUM
Cotton, Gingham, Poplin, Percale,
Pique, Satin,
Velvet, Lightweight wool, Fine
corduroy, Suitings.
14
Cotton: 50~60
Silk: “A”
Synthetic
Mercerized 50~60
HEAVY
Denim, Gabardine, Tweed, Corduroy
16
Cotton: 40~50
Mercerized Heavy
Duty
VERY HEAVY
Canvas, Overcoatings, Upholstery
18
Cotton: 30~40
Mercerized Heavy
Duty
NOTE: The same size thread should be
used for upper and lower threads.
Extension Table
-10-
This sewing machine has an extension table which
converts it into a flat-bed machine.
To insert the extension table:
1. Slide the extension to the right as shown in
illustration.
2. To remove extension table, just pull it to the
left.