Why did my paint do this??!!!

[WestCoastCafe]

I was finishing the painting on my tank the last couple days. I sprayed 12 coats of duplicor silver, and 12 coats of red. After giving the last base coat time to flash off i went to clear coat, sprayed four passes and then came back to find the color of the paint had gone from a bright metallic red to a dull baize/pink. Any idea why this happened, how i can fix it/ prevent it? Looks to me like I am going to have to start all over from scratch :-\ But what did I do wrong??

 

[ronnie]

Well firstly 28 coats of paint is a bit excessive. But to get myself clear here, you sprayed 12 coats of silver, then 12 of red. Let that "dry" and the sprayed 4 of clear?

That being said, was the clear you used the same as the two base coats? Was the base coats completely cured before you sprayed the clear? If they were just dry to the touch then chances are they weren't cured all the way. And if the clear was a different kind of paint it could have changed the color of the red. Did you sand, clean and wipe with thinner the base coats down before the clear? Before the base coats? If not then you may have irregular results. Was it humid or did you spray at the end of the day and it dried out over night outside? If so then the dew settled on the paint during the night and caused the paint to blush causing a discoloration.

Also send a picture of the paint job, one up close too if you can.. That would help a lot too..

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[Ringo]

Did you use a lacquer over enamel? Or vice versa?

 

[JRK5892]

way way way to many coats, the first few coats would have outgassed while curing and could not excape due to the wet layers of paint on top... forcing the gas down and thus pulling the paint off the part

 

[Sonreir]

Too many coats is one reason and failure to allow the coats to full cure could be another.

I usually shoot four coats at a time and let it dry for a day. Then I bake it in the oven at 250°F for an hour. Let it cool down to about 100° (10-20 minutes) then shoot more color.

When you shoot your clear, it should be done over wet paint, not dried or cured. Unless your clear is two-part, then you shoot it over cured color.

 

[71cb350]

maybe you dint mix the hardener with the clear the right way. the clear i use is 4 to 1. if not enough hardener it will blend with the color and make it a lighter shade. also if used clear without any hardener like the duplicolor they have at auto parts stores your first coat should be very light and give it at least 10 min between.

 

[o1marc]

If the red was a solid color why was there even a need to put 12 coats of silver?