Recently Re-sprayed hood - swirls under the CC ?

I

imported_Axe

New member
I have noticed some swirl marks on a recently re-sprayed hood, they are only really visible in direct sunlight, at certain angles. They are circular, (and when the sun shines long enough I will get a pic) and there are hundreds of them! A lot of them are like spider webbing, but some are deeper. So, without further ado I attempted to remove them, nothing. I tried DACP, IP, R2 and several variants of pads even including a yellow cutting pad.



Nothing made a difference, so either my technique is flawed (possible, but I would have thought even a flawed technique would have made some difference) or these marks are under the clear coat, is this probable do you think?
 
I don't *think* it would be possible to be under the cc because the cc fills in any valleys that would be in the color. I'd venture to say that they body shop used a rotary to polish the hood after the repaint and they just swirled it on you.



Keep in mind that I'm not a professional painter so this is just my opinion, but I think you could get these out with something a little more aggressive.
 
Well, if you already tried DACP and IP with a cutting pad, I think you have pretty much reached the limits of a PC. You *could* move to a more aggressive compound with the PC, but I am thinking only a rotary will get this out since you have already given it your best shot.



How long ago was the hood painted? Have you tried calling the body shop about this?
 
Paul



I have a similar problem on my own bonnet, as it has also been re-sprayed in the past at some point.



The are fine scratches/swirls/haze in some areas that look like marks in the CC, but in actual fact, they are beneath it, in the paint colour coat :mad: They are now very noticable after polishing with #80, VM and EX-P.



I have never seen this before and it is really annoying as I know that no product I have will remove them. I can only put this down to bad prep before the bonnet was re-painted - swirl marks and scrathes in the body filler and previous paint coat prior to the new paint and CC being applied.



Anyway, I would be interested in your situation and possible as I can relate to it. I have since been told that a re-spray is most probable :(
 
I don't *think* it would be possible to be under the cc because the cc fills in any valleys that would be in the color. I'd venture to say that they body shop used a rotary to polish the hood after the repaint and they just swirled it on you.
Click to expand...



I'm not a professional painter either; however, I do think it is possible for any swirl, or indeed any base coat defects ie scratches, sanding marks to show through the clear coat.



Wife recently had her Boxster front PU re-painted and there are very fine sanding / swirl (DA Sander induced) marks visible under certain light conditions.

Definately not in CC.



"Just" rushed and poor preperation before applying base coat and subsequent CC...back to the paintshop
 
i had the rear quarter panel painted on my car and it has fine marks under the clear as well-not sure if its in the basecoat or under the basecoat
 
Are you guys talking about swirls as in buffer swirls or sanding marks, kind of like *grooves* under the paint? If you are talking about the sanding marks, I know exactly what you are talking about and that can't be removed, obviously, but if it's just buffer marks on top of the paint, it can be removed.



I guess the hard part is trying to figure out which it is.:confused:
 
I'd say it's definitely possible to get marks etc under the clear coat. My car has a definite "scratch" underneath the clear coat on the hood. It looks deep enough to feel with your finger but the surface is perfectly smooth. I've tried a couple of passes of DACP with no effect whatsoever.



I'm not too fussed though because you have to look pretty hard to find it and it doesn't show up unless you have your eyeball right on top of it!



Ben
 
Hi all,



There can be a definite flaw under the clear. To make things worse, it is usually under the pigment (aka color) coat.



Painters use pretty rough papers when finishing the body prep. The primer is leveled down with typically 80, 220, 360, 400 or even 600-grit papers. But this must be totally dry to proceed with the paint itself. As the primer dries, it shrinks. This shrinkage is uneven, therefore it must be sanded down after drying to ensure surface uniformity. When repainted before it dried completely, it will shrink under the paint and will show and magnify occasional sanding marks. The clearcoat then "beautifully" highlights these flaws, which cannot be removed, only resprayed.

So don't hurry, leave that body-prepped car in the oven! Then sand, then paint! You'll be satisfied!
 
Bence said:
Hi all,



There can be a definite flaw under the clear. To make things worse, it is usually under the pigment (aka color) coat.



Painters use pretty rough papers when finishing the body prep. The primer is leveled down with typically 80, 220, 360, 400 or even 600-grit papers. But these must be totally dry to proceed with the paint itself. As the primer dries, it shrinks. This shrinkage is uneven, therefore it must be sanded down after drying to ensure surface uniformity. When repainted before it dried completely, it will shrink under the paint and will show and magnify occasional sanding marks. The clearcoat then "beautifully" highlights these flaws, which cannot be removed, only resprayed.

So don't hurry, leave that body-prepped car in the oven! Then sand, then paint! You'll be satisfied!
Click to expand...



Exactly. I have seen it before first hand.



- Anthony
 
You must log in or register to reply here.
Back
Top