>Well, I have smeared as much primer on the car as I am going to smear. Now,
>because I am such a wonederfu painter, I want to do some (maybe a lot) of
>finish sanding on the primer. What do I need? Wet or Dry? Grit? Lightl or
>heavy pressure, circular or with the panel strokes?
hey DrMayf try this , apply a guide coat ( using flat black acrilic speckle
/ dust a single coat over the whole paint job so it looks like it has many
black spots on the undercoat ) this helps greatly in showing up all the high
and low spots as you sand back the paint use a 400 grit wet and dry with
water place the sanding paper over a flat sanding block work in small
sections with a back /forward sanding action using medium pressure rinsing
the paper often to stop it clogging sand untill all the guide coat is
sanded off p.s if you have excessive low spots you will rub through the
primer to metal on the highspots and you will still have guide coat in the
low spots go back and use hand putty to fill the low spots allow to dry 24
hrs then guide coat these and sand back smooth and recoat the area again
with primer remember to feather out the putty when sanding back to blend in
to the undercoat when finished clean with soft cloth and water to remove
all sanding residue then use a wax and grease remover over the job and
allow to dry and you are ready for the top coats .
When this is done, maybe
>next week I will apply the color coat. then another. Do I sand in between
>the color coats? Do I need to do anthing special in prep for the color
>coat.
>Remember, this is a pig I am putting lipstick on, not a real car that
>anybody is gonna give a hoot about.
best to place the top coat on in a spray booth dont have one then use the
garage make sure you have enough light and no draughts wet down the spray
area to settle the dust make sure the temp is above 18 deg C very
important to make sure the undercoat is free of any dust and oils use a tac
rag and rub down the whole jobthen this removes any grit and dust and
overspray you previously used a wax and grease remover but you can do it
again to be sure to be sure , build up the colour coats over a series of
layers do NOT try to place to much paint on in one go or you will get sags
and runs mix the paint to the correct ratio as recomended by the paint
manufacturer ( remember that practice and paintence is required by a
painter ) so practice on a scrap panel or some thing first to get your
technique right before you start on the actual job , its best to denib
between each coat that is to allow the paint to dry then use a peice of wet
and dry without water say 600 grit and gently go over the job and remove
bits of grit and over spray then tac rag again do this to each successive
coat , build up untill you have an even coverage and colour not patchy
make sure that you build up enough thickness for the final rub back if you
are using a solid colour if you are using a metalic paint or other special
type you will have to cover this with a clear coat final rub use a 1000 or
1200 grit wet and dry with water and a small amount of detergent gently rub
out any overspray and blemishes untill you have a semi gloss finish then
you can buff and polish easy hey
>Also, I still need an answer to the trunk interior color question: what's
>cool? I have the battery back there, an aluminum water tank, miscellaneous
>wiring, some blue hose and connectors. Contrast to the red color on the
>exterior? White (can you see salt on white)? Blue? Mottled trunk paint?
because its not for show I suggest you use a latex based paint ( colour is
your problem ) this will resist rust and corrosion and is easy to clean and
resists knocks and chips etc
>Same q's for what remain of the engine compartment.
use a paint that resists fuel and oils and is resilient I suggest an engine
enamel air dry is ok
>Now, a another question (blushing over the bad paint work - hey it ain't
>mathematical) I would up with a million little dustbunnies from the paint
>overspray drying before it hit anything. I just wipe them off and sand? How
>do I pevent them while putting the color coat on?
this problem can be caused by several things or combinations of things air
pressure to high , technique holding spray gun to far from the surface
being painted , using the wrong type of thinners ,ambient temp to high, not
enough thinners see my recomendations above note that there is always a
small amount of overspray you can limit this by using a double header wet
coat
spray painting is sure easier than math
Gary
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