GENERAL INSTRUCTIONS FOR PROCESSING DRY FILM
In
order
to
get
the
best
results
for
etching
ferrous
and
non
‐
ferrous
materials
it
is
important
to
follow
the
procedure
below.
INITIAL
SET
‐
UP
A)
Please
be
aware
that
we
have
two
dry
film
photoresists,
one
being
for
ferrous
metals
especially
stainless
steel
(Mega
part
No:
500
‐
052)
and
the
other
for
non
‐
ferrous
metals
such
as
brass
and
copper
(Mega
part
No:
500
‐
024).
It
is
therefore
very
important
to
ensure
that
you
use
the
correct
film.
B)
If
you
are
going
to
etch
a
mixture
of
ferrous
and
non
‐
ferrous
metals
it
is
better
to
use
one
solution
for
ferrous
and
a
separate
solution
for
non
‐
ferrous
if
the
mix
is
more
than
20%
of
either
type.
To
help
having
a
clean
even
etch,
we
recommend
that
after
you
have
etched
3
or
4
plates,
you
add
1
‐
2%
by
volume
of
36%
Hydrochloric
Acid
i.e.
for
5
litres
of
solution
add
50
‐
100
ml
N.B
.
Always
add
the
acid
to
the
solution
.
PROCESSING INSTRUCTIONS.
1.
CLEANING
Using
our
1302
cleaner
mixed
at
4
parts
water:
1
part
1302
Place
plate
in
a
tank
for
7
‐
8
minutes
if
cold,
or
5
minutes
if
heated
to
40°C.
If
you
are
using
one
of
our
conveyors,
you
would
use
our
1302LF
mixed
at
2
parts
water
to
1
part
1302LF.
The
temperature
should
be
45°C
and
the
conveyor
speed
set
so
that
the
plate
is
in
the
process
chamber
for
2
–
2½
minutes.
2
.
Remove
the
plate
from
the
cleaning
solution
and
thoroughly
rinse
under
running
water
preferably
using
a
soft
clean
sponge
to
wipe
over
the
surface
as
you
are
washing
the
plate
to
ensure
all
the
surfactants
are
removed.
3
.
Dry
the
plate
carefully
with
paper
towels
and
leave
to
stand
for
a
few
minutes
before
laminating.
4.
LAMINATING
If
you
are
using
our
hand
laminator
–
For
ferrous
metals
press
the
MOUNT
button
and
this
will
set
the
temperature
to
130°C.
Set
the
speed
to
1.
This
setting
should
give
you
exit
temperature
of
51
‐
52°C.
For
good
adhesion
the
exit
temperature
must
be
above
50°C.
If
you
are
using
any
other
laminator,
set
the
temperature
and
speed
to
achieve
this.
For
non
ferrous
materials
set
temperature
to
110
°C
and
the
speed
to
1or2.
This
should
give
you
the
required
exit
temperature
of
40
‐
45
°C
for
the
non
ferrous
material
dry
film.
After
laminating
leave
the
plate
for
15
‐
20
minutes
to
ensure
that
it
has
cooled
down
to
room
temperature.
If
you
do
not
have
a
yellow
light
room,
then
place
the
plate
in
a
drawer
or
black
bag/bin
liner
whilst
it
is
cooling
down.
Plate
can
be
kept
for
up
to
7
days
before
exposing.
Page
12
