Clear coat over clear coat? Help!

[bigugly]

Thinking about buying a car, it probably makes no difference, but it is a Saturn so it has the plastic body.

Anyway, the car needed a little body work and the guy instead of sanding down the whole panel or touching up each spot individually, decided to spray clear coat all over the hood. Will this be trouble down the road? I have heard that clear coat isn't adhesive on top of other clear coat.

Nice car, but don't want it to look like a POS in a few years.

Thanks guys.

[Pot]

If the hood wasn't sanded/scuffed prior to spraying the clear, it will peel sooner or later...most likely sooner.

[cruzindablvd]

Hey pot......i never heard of shooting clear atop of the old clear without sanding

[Pot]

Hey pot......i never heard of shooting clear atop of the old clear without sanding


I'd never heard of a knowledgeable person to do that, but read bigugly's post. That's what HE said, that's why I answered as I did. You did read bigugly's post didn't you?

[cruzindablvd]

yea i read it pot

[bigugly]

.................

[bigugly]

He may have wet and sand it down quickly before applying the clear coat (probably i guess)

will this probably be a reliable clear coat in that case?

[Dennis N. Schmidt]

Spraying the entire panel is the correct method of repair if he scuffed the entire panel prior to spraying the new clear. There are a million ways of doing this in fact comet cleanser on a wet gray Scotchbrite works very well in hard to reach areas but my preference for a hood is to use P800 3M 260L microfinishing film on an interface pad with a random orbit sander. Leaves a very uniform dull surface. On something curvy Comet and a wet Scotchbrite is hard to beat. You can use Maroon Scotchbrite for this purpose as well but the gray is really all you need.

[Pot]

Hey pot......i never heard of shooting clear atop of the old clear without sanding

After re-reading my earlier response to this post, it could be viewed as kind of snotty. I didn't mean it that way.

[wulffy]

Hmmmm... I didn't think it sounded snotty.. it just was some advice on what to expect if it wasn't properly prepaired.

[woodie]

Hey, first post here. I am wondering what is the correct procedure before spraying clearcoat over clearcoat? I have a bonnet that I have resprayed with a basecoat and 2 pack acrylic urethane clearcoat but during the spraying some sweat was dropped on the wet clear. I let it dry and tried wetsanding it out but the clear was not thick enough and I sanded through in a tiny spot. I was thinking since there is a fair bit of orange peel on the panel I could block it back with P1000 grit wet and then respray it with clear again, would this work? Will I have to repaint the whole panel with colour and clear again because I sanded through to the basecoat?

Cheers
Andrew

[68-chevyman]

I agree! Your fine

[justing70]

"Will I have to repaint the whole panel with colour and clear again because I sanded through to the basecoat?"

After you sand the clear,
You don't have to apply color to the whole thing but you will need to shoot some more color over the spot you sanded through,just blend it out alittle then reclear.

[Phil V]

I agree with justing70. You can safely scuff the rest of the hood with 800 grit wet or dry then spot in your cut through area with more color blending out just a little bit then reclear the whole hood.

One thing that should be pointed out is that if you didn't use a hardener/activator in your basecoat then there is a good chance the paint will lift around your cut through area. Are you spraying a metallic based paint or a solid color paint ?

[Len]

Yes, I agree you need to color the spot before clearing the entire hood. I use mostly "unhardened" color and if I need to repaint because of a sand-thru I will usually recoat the problem with clear first, allow it to harden then scuff it, color it then clear the entire hood. The clear over the hole will seal the unhardened material so that spraying a hiding layer of color over the problem won't cause the edge of the clear to lift. You could also spray a hardened primer over the area but it can be a little more difficult to cover with color.

[woodie]

Thanks for the help. It's a metallic basecoat so I'll give Len's method a go. With this method does the colour look like its 'floating' in the clearcoat, I'm new at this (its my first respray) so am unsure what the paint looks like in different situations. Also when spraying clear over a scuffed clear does it come up just as shiny as spraying clear on a basecoat? I'm guessing the second clearcoat fills all the small scratches and comes up shiny? Probably a stupid question but like I said I'm new at all this :p .

Cheers

Edit: oh and also could an airbrush be used to colour the spot where I have sanded through? Just thought it might prevent some overspray on the rest of the panel.