andyps
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| posted on 23/6/07 at 09:32 PM |
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Paint bloom problem - old paint
Back from a pretty wet Le Mans in my tin top and when I took off the magnetic GB plate I have the paint behind it has bloomed (or it may be the
lacquer rather than the paint). I have tried rubbing compound which has made no difference, anyone know anything else which may work?
Andy
An expert is someone who knows more and more about less and less
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ecosse
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| posted on 23/6/07 at 09:50 PM |
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I've only seen bloom while actually painting not afterwards on hardened paint, but you could try a hair dryer on it (not too close) to lift the
moisture.
Cheers
Alex
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RazMan
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| posted on 23/6/07 at 10:13 PM |
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I have seen this under magnetic signs - the type that taxis use on their domestic car. Its usually caused by the vibration of the sign rubbing away at
the paint (grit usually gets trapped underneath) Mopping with rubbing compound usually does the trick - strange that it doesn't in your case.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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andyps
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| posted on 23/6/07 at 10:36 PM |
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I wondered about a hairdrier - will give it a try tomorrow as long as the weather is dry. It doesn't look like dirt has scratched it at all -
the boot lid was freshly waxed when I put the plate on specifically to ensure that shouldn't be the case. If I get chance I will post a picture,
does seem really strange for paint which could be 9 years old.
Andy
An expert is someone who knows more and more about less and less
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andyps
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| posted on 24/6/07 at 01:15 PM |
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The hairdrier didn't work. It looks like there is moisture under the lacquer, but I can't figure how it got there. I guess it may need
sanding down to take the lacquer off and then re-lacquering. Never had to do this before - does lacquer blend in easily if I use a Halfords aerosol? I
have used it for full panels and wheels but never a patch repair.
Picture below if anyone has any other ideas:
 
Rescued attachment fiat paint.JPG
Andy
An expert is someone who knows more and more about less and less
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Ivan
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| posted on 24/6/07 at 02:20 PM |
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I wouldn't rush into drastic action like stripping paint - leave it for a month or two and see if good old osmosis and diffusion (never sure
which is which), or just plain old evaporation doesn't cure the problem.
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DarrenW
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| posted on 25/6/07 at 09:36 AM |
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I would be surprised if rubbing compound doesnt work. What grade have you used. Ive had success with similar marks using Ferecla G3 first and then
polishing up with G10.
The G3 leaves a dull matt appearance, the G10 is much finer and brings it up to a gloss. In both cases use it wet (or very damp) as the water acts as
a lube and keeps temp build up under control. If using a power polisher dont press on too hard as you dont want to burn the finish.
Iv used a big power polisher before which takes some practice, ive also used a more diy type as well from cig lighter that has done the trick - just
takes a little longer.
As said already might be wise to leave it a while first to see if it dries our itself if moisture has got in, although ill be surprised if this is the
case.
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