If
you
are
working
in
35mm,
mag-track
is
clear
35mm
film
material
with
what
appears
to
be
two
strips
of
quarter
inch
audio
tape
bonded
down
its
entire
length.
These
are
magnetic
audio
tracks
(actually,
only
the
wider
of
the
two
records
audio
signals,
the
slightly
narrower
strip
serves
as
a
physical
stand
off
to
prevent
the
mag-track
from
rolling
up
unevenly).
16mm
mag-track
is
fully
coated
on
the
"emulsion"
side
and
appears
rusty
in
color.
One
side
is
very
shiny,
the
other
dull,
much
like
audio
tape
but
much
thicker
and
sturdier.
With
16mm
and
35mm
mag-track,
the
dull
side
is
analogous
to
the
emulsion
side
which
must
always
face
the
audio
pick-up
heads
on
the
audio
reader.
All
tape
splices
must
be
made
on
the
base
side
only
-
never
on
the
"emulsion"
or
particle
side.
