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Problem with nightshades "cracking"

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Old 03-30-2006, 10:37 PM
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Default Problem with nightshades "cracking"

Hey all,

I did some nightshading on my camaro tails and chsml last night.

Tails went great. rouged em up, cleaned em up, nightshades, clear. Looks fine.

The center... the nightshades "cracked" while drying. At first I thought this was just because I sprayed it a little to heavy, so I went through the effort to clean all of it BACK OFF, re-roughed, and cleaned again.

Did really light coats, same problem again. Anyone had the same problem? I don't think it's just my technique because both tails went flawlessly.

And yes, everything was removed, laying flat. The 2nd try looks better but it still isn't smooth because of the cracks. Looks ok but I'm a little picky.
Old 03-30-2006, 11:34 PM
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I had the same problem. Make sure you do very light coats and that the surface you are spraying is level.

I think it cracks because it moves ever so slightly because of gravity as its drying.

VERY light coats and a level surface was the key for me
Old 03-30-2006, 11:37 PM
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i had the problem on the center (3rd brake light as well).

light coats and constant sanding durring the drying process as well as level drying finally got it.

also, the type of clear will have something to do with the paint lifting.
Old 03-30-2006, 11:56 PM
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i had that problem, but only near the end of the can
Old 04-01-2006, 03:12 PM
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I just thought it was strange that it was only on the chsml. I did it right along with the tail lamps and had no problem at all.

And the 2nd time I did it, I used a ridiculously light coat and it started cracking in the same way.

I'm thinking there is something about the plastic used in the chsml lens. Maybe it has some silacates in it or something.
Old 04-01-2006, 04:21 PM
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huh. i didnt have that problem... very strange. i did mine all indoors. no sunlight or anything. hmm i dunno what it could be.
Old 04-03-2006, 08:33 AM
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Did those without the problem, rough the lens up?

I might try grabbing a new one off ebay and skip scuffing it up.

Last edited by todddchi; 04-03-2006 at 09:31 PM.
Old 04-03-2006, 07:56 PM
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I did my sidemarkers and CHMSL with no problems. I didn't even clear them. It's been 6 months and numerous rains and carwashes and they still look just as good.
Old 04-03-2006, 09:31 PM
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Did you scuff them up first?
Old 04-03-2006, 10:31 PM
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Nope. I took them all off the car. Cleaned and dried them (I think with just water and paper towels). Applied a few coats. Waited about an hour. Applied a few more coats. Let sit over night. Reinstalled on car.
Old 04-03-2006, 11:39 PM
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I'm wondering if scuffing them up might release something from the plastic that the paint doesn't like. That might explain why some have problems and some don't.

Think I'm gonna pick one up off the bay and give it another whirl without roughing it up first.
Old 04-03-2006, 11:49 PM
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yeah, scuffing is bad. do not scuff, i tried this on my truck and the taillights turned out terrible. when i tried the next set (without scuffing) they worked out perfect.



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