White 870 Sewing Machine User Manual


 
18
MAKING
BUTTONHOLES
Buttonholes
of
various
widths
and
lengths
can
be
made
easily.
To
establish
the
correct
length
buttonhole
required
add
1/8
inch
to
the
desired
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.30).
The
width
of
the
buttonhole
sides
are
governed
by
the
thickness
of
the
material
and
a
lower
numner
for
thin
material.
Mark
the
beginning
and
end
of
the
buttonhole
on
the
fabric
with
a
basting
line
or
tailor’s
chalk.
Now
first
practise
making
a
buttonhole
on
scrap
fabric,
following
the
directions
below
to
be
sure
machine
adjustments
are
correct.
(1
)
Replace
presser
foot
with
the
special
purpose
buttonhole
foot,
it
provides
maximum
visibility
and
allows
closely
spaced
stitches
to
feed
evenly.
(Fig.
31)
C
iI
!fl
10
Fig.
32