Paint Question

[BubbaBrown]

Just got thru painting 3  models, one white, one black and one dark metallic blue. The blue one fogged up on parts of it.  Tops of fenders , side of roof, etc.I know rubbing out will remove this, but my question is can I just clear over it ? The fogged up parts look like base coat that's why I asked. Thanks for any help, Bubba

[65slotcar]

sounds  like  the paint  blushed from being too  cold .   most paint  works best at  high   temperature.  i  use  a heat lamp in  the winter time.   i don't  think clearing over it will  help or turn out well. i would try to lightly sand it when fully dry .  then try to re-coat when temp  is good.

[Ace-Garageguy]

Trust me...if it's JUST lacquer blushing, it will disappear if you clear coat it with clear lacquer.

If, on the other hand, it's "mottling" from the particles in a metallic paint being uneven and pooling in some areas, it WILL NOT go away with clearing.

Painting with any product is best done at temperatures above 70 F (many products say 60 F on the label) and at low humidity. 

High humidity, even on a very warm day, may STILL cause severe blushing.

[StevenGuthmiller]

Trust me...if it's JUST lacquer blushing, it will disappear if you clear coat it with clear lacquer.

 

Absolutely!

I have blushing problems occasionally with Duplicolor rattle cans.

Clear coating will take care of the problem, no question.

 

 Steve

[BubbaBrown]

Yes it was lacquer and it blushed. I'll probably leave it sit until this weekend and give it another coat. I usually use a 2 part clear and I wouldn't want to risk screwing it up at this point. Thanks guys

[espo]

You might even give the body another light sanding with say a 3200 pad just to eliminate any uneven finish.

[Ace-Garageguy]

You might even give the body another light sanding with say a 3200 pad just to eliminate any uneven finish.

DON'T SAND METALLIC unless you've tested that particular paint on something else. Sanding metallics and pearls CAN (not always) RUIN the metallic effect, and leave blotches.

[StevenGuthmiller]

DON'T SAND METALLIC unless you've tested that particular paint on something else. Sanding metallics and pearls CAN (not always) RUIN the metallic effect, and leave blotches.

I concur!

 

Steve

[espo]

DON'T SAND METALLIC unless you've tested that particular paint on something else. Sanding metallics and pearls CAN (not always) RUIN the metallic effect, and leave blotches.

You are correct if you intend to go straight to a clear top coat. What I have experienced is that if the paint imperfection is "rough" to the touch or the color is different the clear will only exaggerate the imperfection. My experience is that if you are going to use additional color coats over the area then the surface should be uniform and ready for the clear.

[Ace-Garageguy]

You are correct if you intend to go straight to a clear top coat. What I have experienced is that if the paint imperfection is "rough" to the touch or the color is different the clear will only exaggerate the imperfection. My experience is that if you are going to use additional color coats over the area then the surface should be uniform and ready for the clear.

Yes, I am correct in that first case, which I know from many years of first-hand experience on real cars as well as models.

You are also correct in your assertion, in your second post, that roughness or blotchy color (unless it's simple blushing) will only be exaggerated by clear, but the post of yours I responded to failed to make that point, seemed to suggest sanding immediately before clearing, and failed to mention the frequent need for additional color to smooth metallic colors out after sanding, before clearing.

Thank you for clarifying your advice for the benefit of the original poster in your post immediately above.

Clarity and complete information are very helpful when giving advice.

Assuming someone can draw the correct inferences from incomplete information can be counter-productive. I've found that even when every detail is spelled out clearly and precisely, in English, it's often still not enough.