Silver halo

AAE

AAE

Learner
Panel temp 95, humidity 80%. Gun is 4000b with 1.3, pressure 20 psi. Paint standox with 885 reducer. Color was dark and flat from the start. Any tips on not getting the halo's and to get the sparkle up.
 
In that temperature you need a slower reducer than 885. Your base is drying too quickly which leads to the issues you are having. You need the absolute slowest reducer you can get when spraying in hot temps like that. If you have any SPI 895, I would use that. PPG makes a very slow reducer DT898 which works much better than the PPG DT895. If you can find it Transtar (believe it or not) makes a very slow reducer that works very good in temps up to 100 degrees. 6751 I think. All that being said I would try to shoot the color as early in the morning as possible. 80 degrees or so would be much better than 95 especially for silver.

One more thing even when spraying in high temps it may seem like the base is drying very quickly but you should give it plenty of time to flash off, even a little more time than you normally would in 70-75 degree temps as the top of the coat is flashing off very quick but the solvents underneath are still there. So in reality the base drys slower in hotter temps than at 75 degrees. Give it a little extra time to flash between coats.

A little more air pressure and light-medium coats will make the metallic stand out better.
 
Blends will really go bad if the reducer is too fast for the temps. I wet bed my blends with a 1:1 mix of Standox 599 and reducer, especially with metallics that will have problems (MB812).
 
I have a custom PS2 formula that I make for some vehicles. If your color is dark and doesn't have enough sparkle, you might have to leave out some of the 571 and maybe try have a higher ratio of 811 to 812. But of course then you will have to check the flop to see where that went. My custom PS2 "H+" formula goes like this:

812 169.0
811 169.0
008 31.7
570 3.6
571 4.4

(Your mileage may vary) :D
 
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