Respraying
your car some common sense tips a step by
step guide and hints from Torquecars. A fantastic
way of changing the appearance of your car
is to respray it. The scratches scrapes and
paint degradation quickly build up and the
only way to restore a cars appearance is to
do a bare metal respray..
Please note that you will not get a professional
finish from a spray can and to use the proper
equipment would require a filtered booth to
avoid releasing carcinogens and other nasties
into the atmosphere. Preparation is 65% of
the job, painting is 25% and flatting/polishing
is 10%. Ensure that the area you paint in
is completely dust free. It also helps if
you are respraying your car on a warm day
or have access to a low bake oven.
If you are after a flip paint or special effect
you must ensure that you buy the right paint!
A professional respray can only be achieved
by a professional sprayer in a filtered booth
with good quality spray tools.
Paints all behave in very different ways and
come in the following main types base, acrylic,
and then there are all sorts of effects an
finishes to choose from such as metallic,
pearlescent, translucent and the techniques
for application of these paints are not the
same. We are assuming a standard base paint
for this guide.
Safety.
Paint fumes are not healthy to breathe
in. A decorators dust mask will not protect
you. You need good filtration to take out
paint particles and you need to ensure that
the area you are painting in has a good supply
of fresh air and is well ventilated.
Equipment.
Spray paint cans will never give
a professional finish and are actually extremely
expensive when compared with the cost of hiring
a good quality spray gun and the paint. Check
how much area the tin of paint covers to see
what I mean and remember that you want to
be doing 5-9 thin mist coats of paint.
Step
1: Wash down the area to be painted
thoroughly all sanding and filling has to
have been done before you get to this stage.
The slightest bump or uneven surface will
really stand out when the car is sprayed so
take time and view the panel from different
angles to ensure that there are no flaws that
remain, wet the surface and inspect with a
lamp and this will show any imperfections
that you may have missed. If you have not
stripped off the old paint with a good paint
remover and sanded the metal and prepared
it with a rust inhibitor you need to ensure
that all grit, dust and road film is removed
by using a good quality car cleaning fluid
WITHOUT a wax additive and that the paint
surface is lightly sanded to allow good adhesion
from the new paint. Washing up liquid does
a good job as this strips most of the wax,
oil and bug residue from the car.
Step
2: Clinical cleansing. Using a paper
towel or preferably a screen wipe and solvent
cleaner such as IPA or similar spirit wipe
over and buff off the surface to a smear free
finish.
Step
3: Masking. Any
exposed area of the car is going to get painted
- if you are just a few mm out with the masking
and you will have really annoying over-spray
lines. Masking is even more important, if
you are changing the colour of the car, and
you should pay attention to all of the seams
IE open the doors, bonnet etc and take out
the glass (when the windscreen goes and is
replaced you do not want a small patch of
the old paint showing through.) In a perfect
world the car will just be a shell with all
plastic and interior removed. The more plastic
you can remove from the car the better and
if you can remove the glass as well you will
make the job easier and not have to touch
up the edges when glass is replaced later
as the seals rarely sit exactly where they
were.
Step
4: Spraying. Ensure
that you have a good flow of paint so test
on a scrap of card - you need to look out
for blobs and splatters. Do not aim to completely
cover the metal just spray a fine mist over
the surface - a load of thin coats of paint
is much better than a couple of thick coats.
Keep the spray gun moving at a regular pace
from left to right on the first coat then
up and down on the next coat. Try to view
the car as a whole rather than just painting
a panel at a time (if you are respraying just
one panel you need to blend the paint in to
the surrounding panels as most if not all
paints fade over time.) Ideally leave at least
1 hour between coats of paint. For some paints
you need to finish with a final lacquer coat.
The final lacquer coat will be the last you
apply and even this can be applied in a couple
of thin layers.
Step
5: Finish off with a fine grit of
wet and dry paper then polish off with a cutting
paste and then apply a good quality wax -
this protects the car when you are refitting
the parts you stripped off it. If you want
a matt (non reflective finish) ignore step
5.