If we had a job that fish eyed, we would start over again by washing
off the paint with automotive lacquer thinner. Once the surface fish eyes,
the paint should be removed as something has contaminated the surface. You
don't want to just sand down the surface and repaint as the problem will
usually not go away. In
all my years, we never found the paint or clearcoat itself to be the problem as often
we would use the exact same paint and clearcoat again without difficulty. We started to
think perhaps some truck was driving by spraying something with silicon in
it as often we just could not come up with a reason for it!
Paint is not Spraying Correctly.
This only applies to the 2oz. size. The pints, quarts and gallons of basecoat, midcoat, clearcoat and primer are ready to spray.
You may have used the wrong thinner/reducer or forgot to thin the paint. When using a spray gun, thin the basecoat and midcoat paint 1:1 with automotive lacquer
thinner. (not the lacquer thinner from Home Depot, etc.) The clearcoat is usually thinned with 1 to 2 parts thinner to one part clearcoat. Check the label for instructions. There are other types of thinners/reducers available to use with
our paint (DuPont ChromaBase) and if you want to use these products, I
would consult with your local auto body supply store.
Whitish Haze or Streaks
This is caused by high humidity conditions. Solution - Wait until
the humidity is under 50%. Scuff down the clearcoat, apply more color coat
and reapply the clear.
Fine Scratches in the Clearcoat
If you are seeing fine scratches in the clearcoat after using our rubbing compound (cutting creme), it can be caused
by a number of factors.
1) You didn't put enough clearcoat on and are actually going through it to the basecoat.
2)
You are using too abrasive of a cloth. The best cloth to use is an old, clearn t-shirt or any 100% cotton fabric.
3) This can
also be caused by high humidity and temperature. See the next paragraph here and also the section on Haze.
One more solution if you feel you have done everything correctly it to try a very fine polishing compound. Often this
will take out the fine lines you are seeing and result in a glossy surface.
Spider Veins
This is caused by
either spraying the paint too far away or the temperature is too hot and
the paint is drying before it hits the surface. Solution - Apply the
paint closer to the surface and do not paint when the temperature is above
80 degrees.
Peeling paint
Peeling paint can be caused by a number of factors. If the surface was contaminated with wax or oil, the paint will
not adhere properly. If you painted over an unprimed surface, the paint will fail and peel off. If you are painting a
non-metal surface and do not use the SEM adhesion promoter as the first layer, the layers of paint including primer, basecoat
and clearcoat will fail and peel.
To fix peeling paint, you must first remove all of the peeling paint and start over again using proper surface
preparation.
Powdery Paint
This is similar to the spider vein problem. The temperature was
too hot to spray and the paint has dried in mid-air before it had a
chance to adhere to the surface. Solution - Sand the powdery paint
off, wait until it is below 80 degrees and reapply.
Drying
Problems
After applying the clearcoat, you notice that the painted area is soft
and can be easily indented with your fingernail. Here is what may have happened:
1) You didn't let the
basecoat dry long enough before applying the clearcoat.
2) There was high humidity when you sprayed the paint and water was mixed into the paint.
If you were using a spray gun, you would notice alot of water in your trap. Solution -
Just
wait and let the paint dry. Don't damage the paint by testing it with
your fingernail, etc. until several weeks have passed. If water got mixed in with your paint, you may need to remove all the paint
and start over again. I would consult with a local auto body shop.
Too dark
You have applied the metallic paint and it is too dark.
Solution
- Metallic paints will look somewhat
darker because of the way the metallic flakes lays down. Picture each
metallic flake as a little mirror. These flakes end up at different angles
and reflect the light differently and always make the paint darker. There is little you can do when you use a paint pen or the brush. If you
need a much better match, you must spray the paint. If you are spraying the paint, you can blend
the paint.
Tape Line
You taped off around the repaired area and applied the paint. When
you remove the paint, there is a noticeable line where you painted versus
the original paint. Solution - You must blend
the paint. You can try polishing the line down with rubbing compound, but
if you don't blend the paint, you will always see the new paint versus the
old paint and it will be quite noticeable. So, don't tape in the middle of
a panel and read the blend link above.
Solvent Pop
The tiny bubbles in the pictures are called solvent pop. Two things cause it, either the application is rushed and uncured coats of primer or paint are being trapped under the clearcoat. The second cause could be in compatibility of whatever is under the new material that was applied and the solvents in the clearcoat are attacking it.
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