Why panel temperature is important
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Well I don’t get a lot of stuff ups but managed one today.
See the blotchiness towards the back of the bonnet? Bit cool today and I was using heat lamps. Obviously didn’t get that area quite warm enough and slower drying meant that the metallic sunk a bit. I’ll sort it tomorrow but thought it was a good example for those who don’t understand how temperature can affect colour.
[IMG]http://i589.photobucket.com/albums/ss334/cprscc/Painting/Examples002_zps6acfc200.jpg[/IMG]
This job was both sides, bonnet and front bar. I cleared up over the cant rail rather than put in a join and the one and only run in the whole job was right here. That’s going to be a mongrel to get out without damaging the plastic edge of the trim. :S
[IMG]http://i589.photobucket.com/albums/ss334/cprscc/Painting/Examples006_zpsafd465b1.jpg[/IMG]
Is that with water based basecoat or solvent ?
Solvent based Dupont L400 basecoat, using a medium fast thinner.
Is temperature can effect on it ? This paint is heat proof or not?
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No, the basecoat is just a solvent based acrylic. Not heatproof.
The problem was that I hadn’t heated the bonnet evenly. At the front and at the sides it was warm enough, but in the middle at the back it was just a little cooler. As a result the basecoat didn’t dry fast enough and the metallic had a chance to sink down in the paint. Thus it was darker because the metallic flakes were deeper in the paint, not near the surface where they would reflect the light more.
Perhaps I should have included this explanation with the original post. Temperature of the panel is very important to getting a good match with metallics and pearls. Too cold and the colour goes dark and sometimes blotchy, too hot and it will lighten and you may get strange effects on the flip and flop as the flakes have set in all kinds of different orientations.
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