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Silver Bullet Blue Flame Edition
Shiuming Lai
rebuilds and redecorates the company Jag, Wolfsburg
style!
Here at MyAtari
Towers we love a blast on Tempest 2000
in between editing and laying out articles.
19 months ago I thought about over-clocking
our big cat but only got as far as removing the
internal top-shielding to study where to stick
and what size heat sinks. I remember even further
back at
university reading on Usenet someone got really
nice frame-rates on Hover Strike with 50+ MHz
GPU/DSP, but had neglected to keep the system
cool so it only lasted a matter of seconds...
More recently
I looked at the spray paint set that was bundled
with my car and a light bulb appeared above
my head. While I sub-consciously deliberate
over the Jaguar's bits and chips I'll give it
a face-lift! Unless you know what you're doing,
any repair on a new car needing a re-spray is
best left to the professionals, and with the
best-before date of early 2004 coming up I didn't
want to waste it.
Design considerations First
of all, there's no point modifying something
only to make it worse in any respect. The Jaguar
is a lovely piece of kit as it is, we only want
to enhance that. After doing a feasibility study
I decided to only paint the Jaguar itself and
not the controllers, because the latter are
exposed to far more handling and thus more likely
to develop unsightly patches of wear and
tear. This, and other points covered in this
article, will be applicable and adaptable to
your own personal projects, too.
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Stock
Atari Jaguar before going under
the knife. Note my cool black
IBM keyboard, which has blue
LEDs although you can't see
them in this picture. IBM was
contracted to manufacture and
distribute the Jaguar, since Atari had sold its own
Taiwan assembly plant.
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Anything
with detachable parts, be they moving or just
sub-assemblies should be stripped down and painted
individually, to achieve the best quality finish. Masking
is quicker but I only recommend this in cases
where no other sensible solution is available.
For example, I wanted to preserve the product
information label underneath, because it gives
authenticity. I've seen many car tuning enthusiasts like
to "de-badge" their motors, removing
all trace of original names and logos; this
is not my style, it just reminds me of the naff
old days when BBC Television covered up or removed
all product logos in programmes, because as
part of a public-funded corporation through
license fees it was deemed inappropriate to
show commercial branding, or something like
that. I could have peeled it
off and stuck it back on after painting but
no matter how carefully labels are removed,
it's impossible to get them back on looking
the same, or factory-like.
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The
arched shape of this label is
no problem to mask. Align the
masking tape perfectly along
the straight edge.
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Then
using a scalpel with a new blade,
carefully follow the indentation
of the plastic at either side
and the curved top, to get a
perfect mask.
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I
also prised off the rubber feet
using a flat-blade screwdriver.
They wouldn't have the same
grip if painted over. The adhesive
layer on them is very strong
and good for re-use so be careful
not to scrape if off.
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Next
was to remove the red power button and
power indicator light from the top half of the
case (oh, I haven't mentioned about taking the
Jaguar apart but it's so simple, just four screws
for the case and another four inside holding
the motherboard). The power button was
easy, being a spring-loaded affair with two
integral retention clips. The power light was
more difficult. In some equipment you see the
exposed LED head itself, in others there are
shaped and sometimes coloured lenses, or even
"light pipes" for bending it around
corners or channelling it further away to reach
awkward spots without diffusing too much. Atari
chose the latter and mounted the LED right against the PCB.
A common light plastics manufacturing technique
is used to hold it in place: the smaller part
is mounted on some posts, the tops of which
are melted, forming a rivet-like head that must
be scraped or chiselled away. After this, the
posts will still be good for one more melting,
using the tip of a soldering iron, to put the
part back in place. Otherwise
good old-fashioned glue will do the job.
Pre-painting
preparation Surfaces should be lightly
sanded
down prior to painting but I didn't do this
for lack of a suitable grade paper (lame excuse,
really). It is also important is that
the surfaces are clean and grease-free. To this
end I used normal domestic dish-washing detergent,
hot water and a scrubbing brush, until everything
was literally squeaky-clean. Once the two halves
of the case were dry I sprayed on some plastic primer (which is designed to give
the paint maximum surface adhesion), and allowed
it to dry for 24 hours before applying the base
colour coat, as suggested in the instructions.
Primer comes in various colours, use the one
that is the closest match to the colour coat.
Silver
saturation Remember
the '70s? I do, just. Serious hi-fi separates
were
chunky and silver. In the next decade it all suddenly
changed to
black and silver hi-fi went
out with flares and platform shoes. Now we've come full-circle
and today we're inundated with silver consumer
electronics and, of course, silver cars
everywhere on our roads! Modern clean-cut design
and materials have shown that silver, when done
properly, has a stunning effect, without the cheese factor
of gold which is obviously not gold (though
admittedly I'm quite partial to brushed champagne
gold hi-fi). Silver is high-tech and industrial
as well as glamorous, a perfect marriage.
The
first silver coat went on very smoothly,
but when I came to spray the second coat, the
small can (150 ml) began to expire, due to all
the test patches I had sprayed, otherwise it
would have been just enough. Care must be taken
here: always shake the can between sessions
(even if allowing the painted surface to dry
for 10-15 minutes between coats). Towards the
end, the paint can have a tendency to come out
with a slightly different composition, the metallic
pigment literally separating from the solution
mid-spray (this can also happen if the spray
distance is too great, so you need to experiment,
I find about 25-30 cm is right). In the picture
above, this can be seen as a slightly off dark/dull
patch (circled). The texture of the finish is no
different but the pigment is not there so it
catches the light differently.
My
options were to sand the patch down to reveal
the good coat underneath or buy some more paint
and paint over it, I chose the latter when I
found I'd missed the bottom of the side skirts
(where the top and bottom of the case meet)
and an area at the back.
I
drove into Kingston upon Thames early one morning
to shop for paint. Going back to the subject
of logos, there was no way I could mask the
intricate Jaguar logo emblazoned on the top
of the case so I simply sprayed over it, with
the plan to screen-print a much larger logo
down one side in its place. Regular spray-painters
will know how closely the paint follows surface contours,
so in fact I was left with a feint Jaguar
logo in relief from the original printing. This
was sufficient to use as a guide-line for hand-painting
it back in the original position, because considering
that the Jaguar logo type is a brush script
anyway, any handiwork imperfections would not
be as drastically visible. After parking my
car and taking a round-trip walk of the town
centre I still had to wait
for the model shop to open, then I could purchase
a small pot of enamel paint and a rather pricey
fine brush. The cheaper ones were too soft.
As
far as colour choice was concerned, it had to
be blue. I'd compared a silver paint with various
shades of blue and other metallics but settled
for striking "Lego" blue. Then
it was off to my local VW dealer for some more
of that lovely Reflex Silver, unfortunately
it was only sold as a set with yet more lacquer
so I ended up with something extra I didn't
need.
The
day before, I'd sprayed an old floppy disk (chosen
for its similar material properties to the Jaguar
casing) in silver to act as my testing pad for
the blue paint. I strained to keep an
eye on the Jaguar logo contours while painting,
then had the forehead-slappingly simple idea to sketch
the rest of it out in pencil outline first!
Paint
finishing What gives metallic car paintwork
its incredible lustre? It's not just the base
colour, it's also the final coat of clear protective
lacquer. My previous attempts at lacquering
were disastrous - the critical point to understand
is that the base colour must first dry and harden
properly, and I don't mean dry to the
touch (which happens well within the hour) or
even a couple of days, otherwise the lacquer reacts
with the paint and melts it away destroying
all that hard work! VW's
scant instructions gave no hint of the the drying
time of its paints but I knew from other brands
to expect around 10-14 days in normal (without
forced heating) conditions. I noticed from the
repair patch I sprayed on the domed part of the case that even after several
days of being dry to the touch, the more recently
sprayed part still released paint odour.
Once this had subsided, I used a fan heater
to further accelerate the drying. Doing this
brought out some more odour from
the new patch, but not the rest of the painted
area. So if
you heat your painted object (within reason,
no hotter than you would use to dry your hair
because you don't want to distort the plastic) and it still smells
of paint, it's almost certainly not yet ready
for lacquering.
Watching
paint dry Looking
at the fully painted Jaguar I just wanted to
finish and enjoy it as soon as possible, so
I needed some distractions to allow the paint
to harden. Good things take time. The diffuse green
power LED had to come out, I replaced it with a water
clear
blue type (3.3 V rating, part JA30H from Maplin Electronics,
www.maplin.co.uk),
for maximum focus and brightness. I cannibalized
one of my spare previously modified PCs for this,
because my local Maplin store doesn't seem to grasp that I buy
blue LEDs practically every week and never carries
stock. I'm very impatient when it comes to
getting materials for projects!
While
the motherboard was out on the bench I put a
dab of metal polish on the RF output socket and restored
it to its original glory. It would then gleam
like a chrome-tipped performance exhaust!
Lacquer
is very difficult to apply perfectly on irregular
surfaces, much more so than base colour. It's
clear, making it hard to see how it's
going on (especially with a reflective metallic
base coat), and it's less viscous, meaning it
runs more easily. When you spray metallic paint,
you can see any blotches magically evening themselves
out, so you get a nice consistent finish. Not
so with lacquer! It must go on perfectly first
time and any excess should be gently
brushed off immediately, because it quickly
starts to set and will form lumps where it is
dripping. Any attempt to remove excess after
this point will "scar" the lacquer.
My main concern with this project was to get
a good finish on the top, the bottom was not
so important, especially as the Jaguar's underside
is more heavily textured and would negate the
shining effect. Despite a few drips,
everything went quite well. All that remained
was to clean up, stick on a nice badge and then polish
for a super-smooth protective shine before re-assembling.
From start to
finish this project took two weeks and £21.42
in styling materials - the Jaguar itself only
cost £15! If any readers have personalized
Ataris or hints and tips please send us
pictures, we'd love to see your mean machines!
shiuming@myatari.co.uk
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