SINGER W816 - Manual (Page 26)

25
BUTTONHOLES
Various widths and lengths can be made automatically by
turning the dial (C, Fig. 24)
To establish the correct length buttonhole required add >^inch
to the cutting space for bar tacks.
To obtain the length of the cutting space, the opening through
which the button passes, is measured by adding the width
( A )
and thickness (B) of the button (Fig. 32).
The width of the buttonhole sides are governed by the material
used. Set zigzag stitch width control on number
5 for thick
material and a lower number for thin material.
Mark the beginning and end of the buttonhole on fabric with a
basting line or tailor’s chalk. Make one on scrap fabric
following directions below to be sure machine adjustments are
corrrect.
1. Replace presser foot with special purpose buttonhole foot
This provides maximum visibility and allows closely spaced
stitches to feed evenly (Fig. 3 1 ).
2. Set needle in left position
3.Set zigzag stitch width control (C, Fig. 24) to suit material
being sewn or width of buttonhole desired (number 5 for the
widest buttonhole).
4. Set stitch length control (E, Fig. 24) as close to O as possible
without stopping the feeding action.
5. Set stretch stitch control at manual position.
Fig. 30