REFLECTOR: smooth prime

[Richard Riley]

At 07:53 PM 4/19/05, KeithHallsten wrote:
>Oooh - that's bad news.  I have my wings, canard and fuselage all coated 
>in UV Smooth Prime.  On the plus side, I haven't bought any Top 
>Gloss.  I'll have to talk to the Poly-Fiber folks.  One hopeful note is 
>that I plan to keep my plane hangared; long-term outdoor exposure sounds 
>like the major issue with Marc's problem.  I don't see where any "brown 
>goo" would come from - the Smooth Prime sure seems dry and chalky when sanding!

The exposure is certainly part of the problem with the Top Gloss, but not 
the only problem.  It also permanently stains blue from a spill of 100LL, 
even if you wipe it off quickly, it chips if you squint at it and crazes 
when the sun passes through Pices.

The goo is a mystery.  It has happened with planes that have been 
hangared.  It seems to have occurred more in areas where there was high 
humidity at the time of spraying.  It hasn't happened - yet anyway, or at 
least that's been reported widely - with a plane that has a coat of LP or 
epoxy primer under the top coat, but the sample size is really too small to 
know for sure.