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Paint shrinkage
Posted: Sun Oct 06, 2024 4:45 pm
by Stevie R
I have posted this in the bodywork section but I thought I would try here as well
I have what I think is paint shrinkage on the side of my bonnet it looks like thin hair line cracks, I don’t want to go down the respray route because they are only very small so I was wondering if there is a miracle product out there that would disguise or cover them over?
Re: Paint shrinkage
Posted: Sun Oct 06, 2024 5:12 pm
by exlkrs
As you suspect, the answer is no! that said, you need to look at why it's happened. How long ago was it painted? I suspect problems with the prep/undercoating
Re: Paint shrinkage
Posted: Sun Oct 06, 2024 5:18 pm
by Steve Phillips
Paint shrinkage and hairline cracks are normally (but not always) caused by excessive Paint being applied,
Or by a reaction between dissimilar paints, although this normally results in bigger cracks in the paint finish,
So it sounds like as the Paint has dried its shrunk and the cracks have appeared,
Is there an easy answer to fix this, not that I'm aware of other than blocking it back and respraying,
Sorry I know that's not the answer you were hoping for, but I don't know of any other cure.
Steve
Re: Paint shrinkage
Posted: Mon Oct 07, 2024 6:09 am
by stuffedpike20
I made the mistake of using zinc primer under cellulose one time.
The paint cracked like a crackle glaze within weeks.
I had to take it all off and start again with etch primer.
You could try one of those scratch repair pastes which claim to spread around the top coat, but I doubt that it would work.
