the_fbi
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| posted on 26/12/06 at 09:27 PM |
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Fibreglass bodywork painting, anything special?
My aeroscreen currently doesn't match any of the colours on my car, so I'm looking to spray it.
Anything special required when it comes to prepping/spraying fibreglass?
Just scotchbrite pad, primer, 800 w&d, primer, 800 w&d, colour?
Any advice appreciated.
ta
Chris
[Edited on 26/12/06 by the_fbi]
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Chippy
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| posted on 26/12/06 at 11:05 PM |
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One of the most important things is to make sure that all the release agent has been removed. I am no painter, but have always relied on a mechanical
bond, rather than self etch primer, by giving the item a good rub down initialy with 240 ish grade w & d, then primer surfacer, and rub down with
1200 grade prior to top coating, and finaly laquering. HTH Ray.
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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RazMan
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| posted on 26/12/06 at 11:43 PM |
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A good quality etch primer is as essential as a good keyed surface imo. Otherwise just treat it like normal bodywork with base coat & laquer. 
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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the_fbi
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| posted on 27/12/06 at 12:13 AM |
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Another concern I have is that it has to be flexed to put it on the scuttle, so I may just prep it now then spray it when its in place.
Only problem is that means I can't spray it in a warm environment.
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worX
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| posted on 27/12/06 at 11:55 AM |
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Flex
Just fit it within a day or so of painting and even if it does flex it won't matter as the layers OR depth of paint won't have dried fully
and therefore won't crease or crack etc.
should be fine...
HTH
Steve.
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Syd Bridge
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| posted on 27/12/06 at 12:44 PM |
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Ok, so every man's an expert and got his own way of doing things......
So,....forget all the etch primers on grp.Waste of time, money and effort. Clean off with 'body wipe', thinner, or similar. Wipe on wet in
one direction, then wipe off with a clean cloth each time. When it makes a noise like 'chalk scratching a blackboard' when you drag your
finger across it, it's clean.
Sand with 240-400 Frekut paper. Then a coat of two pack epoxy primer.
After the two pack epoxy, you can use any top coat you want.
At least that's how I've done it for at least 30 years, and most of the marine industry has for as long as I remember. The best two pack
epoxy primer comes from Awlgrip. Also used on most yank aircraft. But only comes in US gallons. 
Cheers,
Syd.
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