That helps alot Graham,
What you are describing to me is known as silicone contamination, or
cratering (fisheyes). I will list causes, repair, and prevention for your
future reference.
CAUSE.
(A) Spraying over surfaces contaminated with oil, wax, silicone, grease,
etc.
(B) Use of thinner/reducer in place of a solvent cleaner.
(C) Spraying over previously painted areas that had "fisheye
eliminator/anti-silicone" additive in the paint.
REPAIR.
(A) Remove wet paint film with solvent, clean and refinish.
(B) Add the recommended fisheye eliminator and respray the affected area.
(C) If the paint has dried, sand to a smooth finish below the fisheye
cratering and refinish.
PREVENTION.
(A) Thoroughly clean the surface to be painted with detergent and hot
water, followed by the recommended solvent cleaner. Wipe dry with clean
rags.
(B) Use fisheye eliminator that is specifically recommended for the
topcoat.
(C) Install an air filtering system that removes and prevents oil and
moisture contamination.
(D) Maintain air supply by draining, cleaning and changing filters on a
routine basis.
I would be wary of any compounds, or waxes that claim to be "paint safe",
their is no such product out there. Trust none of them when it comes to
finishing your pride and joy! When you put a compound or wax within 1 meter
of anything to be painted, Beware! I go as far as to bag up all my polishes
in plastic when I paint. You can't be too careful. Hope all this helps in
the future.
Jim Thursby
U.S. builder #AO52.
----------
> From: Gramin@aol.com
> Subject: Re: Repainting
> Date: Tuesday, May 20, 1997 2:37 PM
>
> Many thanks for your offer of help, Jim.
>
> I am using the "standard" (for Uk anyway) Europa offering of Akzo(
> Netherlands) Aerodur Barrier Primer and Aerodur C21/10 UVR 2-part top
coat
> applied by air spraying at 5 bar. There was no lifting or softening,
just
> complete repulsion of the new top coat in localised areas ( up to several
mm.
> across), resulting in an unusable surface. If those are fish eyes, they
are
> from Moby Dick !
>
> I have rubbed it all down once more and repeated the process, this time
> successfully. But it would be nice to know what not to use as polish, in
> case I want to recoat other parts of the a/c. Highly likely it would
seem,
> as I always seem to rub through before the finish is to my satisfaction.
>
> Graham C.
>
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