If my antediluvian memory cells are functioning at all, I believe that's
because modern metallics use a larger 'metal'
flake, thus needing the clear to smooth and protect. Single-stage metallics of
long ago used a more finely-ground flake
and, possibly, could even be sanded and polished (not sure about that). Of
course, the earlier metallics could not be
made as garish as some of the modern stuff. Metallic paints were around a long
time before 2-stage paint systems.
I believe, but can't prove, that 2-stage paint systems became popular not just
because of the glossy look, but they
allowed the manufacturers to use much less base/color paint which is more
expensive, due to the solids, than a clear. A
new car's paint is primer, just enough base to cover the primer, and a thick
coat of clear that can be sanded and
polished if necessary.
In a 2-stage job, the clear has to be applied within a half-hour or so after
the base--if you've got orange peel or
fisheye in the base too bad, unless you wait until it dries to sand it off and
start over.
Bob
On 1/27/2013 12:02 PM, john spaur wrote:
> I was told base coat clear systems are required for metallic colors. However,
> I never researched it. It may have been
> a requirement with the particular metallic color I used which was Aston
> Martin almond pearl green.
>
> John
>
> At 12:49 PM 1/27/2013 -0500, warthodson@aol.com wrote:
>> How about a discussion of the pros & cons of current paint product types &
>> brands available today? Of particular interest to me, in the category of base
>> coat, clear coat products, are there some types or brands that produce a
>> harder, more chip resistant finish than others?
>> Thanks,
>> Gary Hodson
>
>
>
--
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Bob Spidell San Jose, CA bspidell@comcast.net
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