White 762 - SPECIALIZED FABRIC AND TECHNIQUES

12
When
the
upper
and
under
tensions
are
properly
balanced,
a
perfect
stitch
will
be
formed
with
both
threads
interlocking
in
fabric
Fig.
15,).
When
the
upper
tension
is
too
tight,
the
lower
thread
is
pulled
up
over
the
upper
thread
which
is
lying
flat
on.
the
fabric
‘Fig.
16’).
When
the
upper
tension
is
too
loose
the
upper
thread
forms
loops
over
the
lower
thread
lying
flat
on
the
fabric
(Fig.
17,.
ADJUSTING
PRESSURE
AND
FEEDING
OF
FABRIC
Fig.
14
GENERAL
SEWING.
Usually
for
straight
sewing
and
zigzag
stitching,
the
pressure
bar
ca
or
darner
release,
22,
Fig.
18,
is
at
its
lowest
position
and
the
drop
feed
knob
is
turned
t
REG.
position,
Fig.
19.
Fig.
15
_
F
Fig.
16
__
_______
___
___
Fig.
17________
Fig.
18
Fig.
19
*,
‘, ,-,