Rustoleum will also crinkle if you try and put on
a coat after the 4 hour dry time. It takes about
a week to cure before you can try putting on another
coat of paint. That's why they tell you to apply second
and third coats within 20 minutes of spray time.
Scott Suhring
Elizabethtown, PA
'70 TR6
'59 TR3
Aribert_Neumann@magna.on.ca wrote:
>
> My experience is that when a paint such as Rustoleum crinkles it is because of
> too much solvent in the last coat (that was applied). WHen using spray bombs
> too thick of a coating will put too much solvents on the surface and if the
> solvents do not evaporate fast enough then there is a chance that they will
>melt
> down into previous layers of paint. In my younger days, prior to learning
>about
> automotive epoxy primer, I used rusoleum rusty metal primer under acrylic
>enamel
> automotive paint. The trick in avoiding the crinkle finish was to seal the
> rustoleum primer from the much more agressive solvents used on automotive
> finishes. I put several very light (almost dust) coatings of laquer sanding
> primer on the rustoleum primer. I only did this when the air temp was over
>80
> deg F so that the laquer thinner would flash off before melting into the
> rustoleum primer.
>
> From: "Westerdale, Bob" <bwesterdale@edax.com>
> Subject: General Rustoration, certainly lbc relevant.
>
> In the course of restoring various lbc's, refinishing the hoodsticks,
> prop-rods, spare tire wells, etc.. I have had some unexplained failures that
> perhaps are not entirely my fault.
> For years I have used Rustoleum enamel, largely because it seems fairly
> durable and is readily available, and fairly inexpensive. Most of the time
> it goes on fine, whether from aerosol or brush, even thinned and sprayed
> with a gun. However, sometimes after starting with Rusty Metal primer, the
> topcoats ( usually the 2nd) seem to react with the preceding layers to cause
> the whole refinishing effort to wrinkle up and look more like 'Krinkle
> Finish' than gloss black.
> I have dutifully tried to follow the instructions ( not a natural act...)
> and observe the correct waiting time between coats, air temps, clean
> surfaces, etc. Still, at the most critical times, the paint will suddenly
> erupt leaving me no alternative but to wipe the whole thing clean, or let it
> dry and try to sand it back to some semi-textured state. I have called
> Rustoleum on this problem, and they mumbled something like " sounds like
> trapped thinner in the lower layers", which I do not readily believe. When
> I spray a car with a good self etching primer and a couple of topcoats of
> Centauri or Delstar Acrylic enamel, I have never seen a similar problem (
> unless of course the surface is still covered with Simonize...) and I'm sure
> that paint is full of trapped thinners...
> Has anyone seen this problem, and if so, what magic words must I say
> to avoid it? I sprayed my seat frames last night, and when I checked 'em
> this AM, the 'grunge' had visited me yet again, just what you need on a
> Monday morning....
>
> Thanks
> Bob Westerdale
> 59 3A TS36967E
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