INTRODUCTIONOver the past
five years I have painted two complete vehicles and did some spot repair
on one other. While the thought of painting your own vehicle might scare
you, it is really pretty easy to do if you follow the one big cardinal
rule of auto painting: TAKE YOUR TIME! In what follows I will
attempt to prepare you so that you can paint you own vehicle. We will
look at what equipment is required, how much it costs, the procedure to
paint your vehicle and other issues. Before I
get too far into this I should explain that I am by no means an expert.
I have learned many new things with each paint job and I expect that I
will continue learning with each new vehicle I tackle. If this is going
to be your first vehicle, it helps to have an attitude that you have
nothing to lose if you try it yourself. Minor imperfections in any paint
job are EXPECTED. Maybe that should be cardinal rule number two. One
thought here is that you could start by painting something besides your
car, like a metal chair or a spare door from a junk yard. This is a good
way to get started and if you mess up, no big deal. There
are four basic steps when painting a vehicle: - Prepare the
vehicle
- Primer
- Paint
- Clear Coat
(optional)
Each of these
will be discussed below in more detail and we'll actually expand the
four steps to about a dozen.
EQUIPMENTAir Compressor - This is the most costly piece of equipment you need to paint a
vehicle. I have painted my vehicles with a Sanborn 3.5 HP compressor
that has a 20 gallon tank. I recommend this as a minimum. A compressor
such as this runs around $250. Sears and Cambell Hausfield are two other
brands that are quite popular. You can use a smaller compressor, but my
experience says that you need at least close to the above configuration
to be successful. The highest psi I ever utilized in painting was 60 psi.
Most compressors can easily do this. It is helpful if your compressor
has enough hose to go half way around the vehicle. I'm sure you can rent
compressors if you can't afford to buy one. D/A
Sander - A D/A is not a grinder. It moves in an oval fashion and
does a much better job at sanding chores (as in, it is not as hard on
the surface). Your D/A sander runs off the air compressor. You can sand
by hand, but for anything below 220 grit, using a D/A is much easier.
Again, it can probably be rented, or purchased for $50. Paint
/ Spray Gun - This is "spray can" if you will. When hooked
up to the paint can (which is part of this - it can be removed and
filled with paint, primer, etc) and the air compressor, this delivers
the paint. Must guns have triggers (basically on/off levers) and two
adjustments which determine the air / paint mixture and the amount of
paint delivered. Together these determine the pattern the paint is laid
on the vehicle. I am definitely not an expert here, so consult your
local paint guru. Basically you want a circular pattern, where the top
and bottom parts of the circle are stretched up; I guess it is somewhat
like an oval. It can also probably be rented, or purchased from anywhere
from $30 to several hundred dollars. I painted all my vehicles with a
cheapo $30 model and it seemed to work fine. Strainers - You should have strainers so that when you put the paint or primer
into the can, it filters out any impurities. It is also a good idea to
have a strainer on the paint intake inside the can (on the gun). These
latter strainers clip-on the spout that takes the paint up to the gun.
You need about five of the former and three of the latter (although the
latter can be re-used in a crunch). These should run you less than $5. Stir
Sticks - As expected, these are used to stir ingredients together.
You need about five of these. Any real paint store will throw these in
for free (in fact, they should throw in the paper strainers above for
free too). Water
Remover Filter - I don't have any fancy equipment, but such
equipment does exist that removes any water from the air line so that
you don't get water mixed in with your paint. I bought the cheapo
disposable ones that go between the air line and the paint gun. These
did me just fine. The disposable filter it about $5. Gloves - As paint is a chemical and hence dangerous, you should always were
rubber gloves when preparing the paint, painting and cleaning up. Gloves
are probably around $10. Face
Mask - You should have a mask which covers your mouth and nose. They
sell cheap masks which use disposable charcoal canisters. This is a must
- don't think you can sacrifice your health in this exercise. This is
probably around $20. Sanding
Block - You'll need a $10 sanding block to handle the sand-by-hand
stuff. A small one that fits in your hand should work well. If you are
doing body work, you might want other exotic stuff (cheeze graters,
large sanding blocks, dollies, etc).
FINISHING PRODUCTSThere are at
least three different types of paint. Lacquer was popular a few years
ago, but has fallen out of favor and according to one paint expert I
talked to, it is being taken off the market. Urethane is probably what
most truck owners would love to have on their vehicles since it is quite
hard. However, urethane requires a full oxygen ventilation mask and body
suit and is therefore inappropriate for most people. It requires this
"hardware" becuase it contains poisonous chemicals that the
body cannot handle. The most
popular paint for the do-it-yourself crowd is enamel, and specifically,
acrylic enamel. This paint lays nicely, is cheap and is easy to fix if
you make a mistake. In addition, it is easily available. This text is
written assuming that acrylic enamel is being used. There
are several different paint manufacturers. I have always used PPG
products and they have proven to be an excellent choice for me. Dupont
is another popular manufacturer and I suppose there are others. This
text is written assuming that PPG products are being used. So what
do you need to paint a full-size truck? I cannot say for sure, but when
I painted my full-size Chevrolet Blazer (including under the hood, door
jams, interior and rear bed, but not including the canopy as I painted
that another color), I used about a gallon at each stage. Here is a
rough idea of what you need, including quantity and cost. Primer - A gallon of primer is enough to paint and seal the vehicle. Primer
comes in several colors (grey, green, white, red, etc.) and you should
choose the color wisely. Try to match the primer color to the final
color and don't use red primer if you are going to paint your vehicle
white. The cost for a gallon of primer is about $60. The cost for a
quart is $22. I used DP40 (gray) and DP48 (white) in my past
applications. Catalyst - You'll need about a gallon of this also. You mix the primer and
catalyst together in a 1-to-1 fashion, possible let it sit for 30
minutes to mix together (depends what catalyst you use), and then paint.
Cost here is about $59 for a gallon. I used DP401 here (you can also use
DP402 which doesn't require a 30 minute induction period). Paint - This will no doubt have to be custom mixed. There are tons of color
books for you to pour over to pick your color. Your best bet is to find
a vehicle on the street that has your color and then go find that color
in the book. I have never tried a metalic paint, but have been told they
are harder to lay and especially correct if you make a mistake, so I
would stay away from them if this is your first time. A gallon of paint
is required and will run you about $68. I used DAR here. Enamel
Reducer - They make reducer in several temperature ranges (cold,
medium and hot). Pick the right temperature so that the paint doesn't
dry to fast or slow. A gallon of this will run about $16. I used DTR-602
(602 is the medium temperature reducer; 600, 601 and 603 are the others
I believe). Hardener - You don't need much of this, but the stuff is like gold. Plan on
spending $33 for a PINT of this stuff. I used DXR-80 here. You'll need
this at both the paint and clear coat stages. Clear
Urethane - While you cannot lay urethane paint due to the poison in
the reducer, you can lay a clear urethane coat over the paint to protect
it. This is highly recommended, but is an optional step. The cost for a
gallon of this stuff is about $58. I used DAU-75 here.
MISCELLANEOUSSand Paper - For your D/A sander, get 5, 5 1/2 or 6" sticky back, round paper.
You'll probably want 40, 80 and 220 grit for this. For hand sanding,
you'll want lots of 400 grit and maybe even 500, 800, 1000 and 1200.
Plan on spending $20 on sand paper. Bondo - I'm not going to discuss body work here, but if you have to do some,
you might need this magical stuff. Masking
Tape - Get 3M painting products. Cheap tape will not do. When you
remove it, it will tear the paint from the surface. You might need
several different widths, but 3/4" is a good all-round tape. For
places where there is a line between the paint and something else that
is very visible, use Fine Line Tape (the green stuff). It is expensive,
but cuts the paint when you remove it. You'll need several rolls of tape
(like five at $2.75 each). Masking
Paper - You can buy special paint masking paper, but I utilized
regular newspaper the last two paint jobs and it worked fine. Best of
all, it is free. Tack
Cloth - One tack cloth is a good idea to use between the primer and
paint step and between the paint and clear step (see below). This
removes any particles that might of landed on the finish while drying.
This is $1.29 each. Rags - Old cotton t-shirts will work. You need something to help you clean-up
the mess you make while painting. Plastic - If you have access to a paint booth - great. If you are like me, it
was the garage. Here is a very important rule to remember - if you don't
want it painted, cover it. Paint goes everywhere in your garage. Cover
the floor and all the walls. Get cheapo $3 plastic paint drop cloths and
staple or tape them in place. You'll need about six of the big ones. If
you want to re-use them later, get the heavy duty ones (they are about
three times the cost). If you paint in your garage, assume you will get
some dust and bug imperfections in the paint. I have found this
unavoidable in the past. Note that in some locations, it is illegal to
paint your vehicle outside or in your garage. Wax
and Grease Remover - Ahhh - DX-330. This stuff is great if you have
tar or something you need to remove from you vehicle. It is required
that you use this stuff prior to painting the final surface to remove
finger prints, wax, etc. Failure to do so will result in problems (like
primer and paint not sticking). A gallon of this run something like $30
(?). Thinner - You use standard thinner to clean everything up at each stage. A
gallon of this run around $17. You will need at least a gallon. I used
DTL-876 here. Fans - Ventilation is key. You need at least one, and I would recommend
multiple box fans taking air (and paint fumes) out of the garage. I
utilized three fans my last time and this was a good amount in my
opinion.
PROCEDUREStep 1 -
Remove all the parts of the vehicle that can be removed. This includes
windshield wipers, chrome, bumpers, etc. I find it easier to strip the
vehicle than tape everything up. If you remove it - it clearly cannot
get painted. Some things like tires I just cover up because it is a pain
to remove them. This step could take up to half a day. Before you do
this step you might want to take a "before picture". Step 2 - Prepare the body. If you have any body work to do, now is the time to
do it. I cannot comment too much on rust prevention and body work, as I
have had minimal amounts to do and these topics could double the size of
this. Suffice it to say that if your existing paint is still there, it
is useable. Scuff it up with 220 on the D/A and it will be fine. Be care
not to break into the old primer (but it is ok if you do) and be super
careful not to break into bare metal. If you do, you must metal etch
(another chemical) the metal and then immediately cover it with primer
so that it does not start rusting. If you are doing body work, you
probably want a special primer which builds layers, so that they can
then be sanded down again to make everyting flat. This is a different
primer than I will talk about below. The primer below simply covers and
seals the existing surface and provides a good surface for the paint to
stick to. I hate
sanding. However, this is the most critical step of all the steps that
follow. If the body is not PERFECTLY straight now, it certainly will not
be after the paint is laid. In fact, any minor imperfections here will
be exaggerated when the paint and clear are laid. Follow the cardinal
rule - take your time at this step. Plan on spending at least one day on
this step. Use
wet/dry sand paper and do your sanding when the vehicle is wet. It is
easier this way and actually cleaner. Step
3 - Clean off the surface with wax and grease remover. Step
4 - Mask everything you don't want painted. This is an art. Use
plenty of masking tape and paper and cover everything and don't leave
any piece of paper "flapping in the wind". At this time you
can cover everything in the garage too. Step
5 - Clean off the surface again with wax and grease remover. You can
also use the tack cloth at this point if you desire. Start the fans in
the garage. You should do this whenever you mix or paint. Step
6 - Mix the primer and catalyst as directed on the primer can. In my
case, this was 1 part primer to one part catalyst. Depending on the
catalyst, you might have to let it sit for 30 minutes to mix properly.
Make sure you use the strainer when pouring into the can and use the
stir sticks to mix everything real good. Before you even open the primer
and catlyst, shake them up well. Use gloves and the mask. You should do
this whenever you mix or paint. Step
7 - Test the spray gun on some newspaper. Get the pattern down
properly before starting. This should be done before the primer, sealer,
paint and clear coat steps. Step
8 - Spray a light coat of primer on the vehicle. Hold the spray gun
about 16 inches away from the vehicle at all times and move in long,
flat strokes the length of the car. Start on the left, start moving,
press the spray button, keep moving, release the spray button when at
the right, stop moving. The next stroke should slightly over lap the
last stroke by 25%. Spray a very light stroke to start with - it doesn't
take much. Oh, I believe you lay the primer at 50 psi, but check the
instructions on the primer. Don't lay it any higher or lower than this,
as you can get fish eyes, orange peel, etc. Primer
dries fairly quickly (like in 15 minutes). It is good to put on two or
three coats, but no more. If you put too much on, it can crack over time
(you don't want too much surface). Lay each coat about 15 minutes apart. Undoubtly
you will have a run or two. No problem. Let the primer dry longer in
this case - like two hours. Then get out your hand sanding block and
some 250 or 400 grit wet/dry sand paper and sand the run out. Use water
when doing this. Make sure the run is perfectly flat with the rest of
the primer. Clean everything with wax and grease remover and then the
tack cloth and if necessary, lay a little primer over the spot. Your
last coat of the two or three primer coats should be a sealer coat. You
can buy special sealer products, but simply adding in some DTL-876
thinner to the primer and catalyst will seal the surface. Mix 1 quart
primer to 1 quart catalyst to 1 pint thinner. Again follow the
instructions on the can and lay it just like above, except at about 45
psi. Let this dry 30 minutes minimum. You
should plan on spending four hours doing this step - more if you make a
lot of mistakes. Primer is waterproof, so you could stop here if you
wanted. However, it is best to lay the paint within a week of laying the
primer (and you can start laying the paint after the sealer dries, but I
perfer to let it thoroughly dry overnight just to be safe). When
done, clean all the equipment with thinner. Put mixed but unused
primer/catalyst in a gallon jug or something that can be properly
disposed of later. Close unused primer and catalyst tightly. Be sure to
clean the gun and can very good; failure to do so could contanminate the
next paint step. Step
9 - Paint time. You lay the paint at about 55 psi. The paint should
be thoroughly mixed-up prior to opening the can. Mix the paint by
instructions. This usually means 16 parts paint to 12 parts reducer
(matched to the current temperature) and 1 part hardener. Use the
strainer and stir sticks. You shouldn't have to let this sit at all.
Make sure you use your mask and gloves. Clean
the vehicle with the tack cloth prior to laying the paint. Lay three
coats of paint. Let each coat dry at least 30 minutes before laying the
next coat. Use the same back and forth method as with the primer above. A note about
hard to reach spots. Expert painters will do door jams, under the hood
and other hard to reach places first, so that they are out of the way.
This is a good practice. I would recommend doing these first, letting
them dry, then closing them so that you can paint the outside of the
vehicle all at once and without the problems of being a gymnist. As with
the primer, if you have a run, let it completely dry before attempting
to fix it. For the paint, this means several hours and probably over
night. Use 400 grit sand paper, again using water. Don't use the D/A
after the primer step - this is a hand sand thing. If you are ever
scared about using a particular grit, go up one grit and start there.
400 grit for color sanding paint is appropriate however. When
complete, clean the gun and can. Dispose of unused
paint/hardener/reducer in the proper place. Close-up all cans. In
general the hardener needs to be used in seven days or it goes bay (so
the can says - I've used it months later, but you gotta seal the can
well and then you'll have to use plyers to get the lid off again). Let the paint
dry over night before laying the optional clear coat. Step
10 - Clear coat. As mentioned above, this is an optional step. A
urethane clear coat will greatly increase the durability of the paint.
Plus it will give it a bit of depth and gloss. Follow the instructions
on the urethane clear coat can. Generally this stuff is mixed with some
hardener. You mix it in the can (with the strainer) and then spray it.
You mix 1 gallon of urethane to 8 oz. of hardener. Use a tack cloth on
the vehicle prior to doing this step to remove any minor particles that
landed on the vehicle while it dried over night. Like the
primer and paint, lay the clear coat very lightly at first. However, and
this is an experience thing, you gotta lay it somewhat heavy and wet. Be
careful not to let it run though, because fixing a clear is, well,
undesireable and difficult. Use the same back and forth strokes,
overlapping with the last stroke. The directions call for 45 psi, but I
like it wet, so I used 55 psi. You can
lay several coats of clear. A gallon should allow about three coats on a
full sized vehicle. Let each coat dry around 15-20 minutes. When
done, clean all the equipment and properly dispose of any excess. Let
the finished product dry overnight. Step
11 - Remove all masking tape and paper. Be careful during this step.
The excitement of "seeing the final product" can cause you to
tear away masking tape too quickly and tear the paint away from the
surface. It will take a couple of days for the paint to fully dry and
cure. Step
12 - Replace all the bolt-on pieces that were removed. Again, don't
get too anxious so that you scratch your work of art. Step
13 - Smile - you are done! Quick, take some pictures before it gets
dirty! If you
plan everything right, you can strip the vehicle one night, do the body
work at your leisure (you can even do some body work without stripping
anything), lay the primer Friday evening, lay the paint on Saturday and
the clear on Sunday. You can put it all back together on Monday night
and drive it Tuesday. But remember the cardinal rule - take your time.
The more time you take, the better the end result. PPG
provides data sheets on all their products. Get these prior to
purchasing anything. They explain a lot of things such as: Product
identity Background
(summary of product) Directions
for use (how to mix, dry time, # of coats, psi, repairing or recoating,
temperature guidelines, etc.) Compatible
and Incompatible surfaces Test
properties Who
to call in case of an emergency
PPG also
has a full-line catalog that comes highly recommended. See if you can't
grab a copy of that before starting too. And just
for reference, a typical spray can holds 1 quart of material. While the
primer, paint and clear all have instructions on mixing, rarely do they
have a nice fomula that comes exactly to a quart. You are gonna have to
do some estimating and that's ok because you don't have to exact. You
remember this from grade school, but here it is anyway: 1 Gallon
= 4 Quarts 1 Quart = 2 Pints 1 Pint = 16
ounces
SOME PAST EXPERIENCESUndoubtly you
will have some mishaps your first time. My biggest problem the first
time was I either didn't use the right temperature reducer or laid the
paint at too high a psi. This caused what is known as an orange peel
effect - kinda a texture in the paint like an orange. Color sanding
helped this a bit, but it was never perfect. I also learned that
anything you didn't want covered with paint in the garage better be
covered by plastic. Expect your shoes, clothes and fans to be a
different color than when you started. My
second paint job was a fender fix. While I laid the paint great, I
didn't do a good job of masking. It is important to mask along natural
lines of the car. I should of repainted the entire hood and fender
instead of attempting to just do the area I fixed. I'll know better next
time. My
latest job was my full-sized Blazer. My biggest flaw here was body work.
I should of spent more time doing this terrible task. Althought the
paint went on pretty good, it highlights the body work flaws. I also
should of painted the hard areas first (under the hood, door jams) and
then painted the outside. I tried to do everything at once and this
cause me some problems in the form of runs (the hood was half up and
hard to get to for example). Each
time however, I have improved, and I have always been happy with the end
result. It is always a vast improvement over what I started with.
CONCLUSION I'm sure I have
forgotten or left out several items. If you have any questions while
reading this, please don't hesitate to drop me an email message and I'll
do my best to help. Three other sources of great information are (1)
various 4x4 magazines, (2) your local library and various books on how
to paint and (3) your local auto paint supplier. I relied heavily on the
the latter and found they were very knowledgeable and helpful. They took
a lot of time trying to help me do the right job. If your supplier isn't
- find another one. I didn't add
up all the finishing products and miscellaneous products above, but not
counting the compressor and tools, you can paint a full-sized vehicle
for around $350. This compared to some quotes I recently got in the
$1000 to $1500 range for similar paint jobs. Enjoy -
and let's see those before and after pictures when you are done! Rick D.
Anderson Interactive
Systems, Inc. email: rick.d.anderson@tektronix.com phone: 503-627-2630
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