[QUOTE=mr4speed;1627435]This is an interesting thread. The way I see it is if a custom paintjob gets damaged and ends up at a body shop to be repaired that shop most likely will not know what brand of paint was used originally. So if a fender or door or quarter have to be blended, they are going to use their brand of paint over the original shoot. So that throws out keep all the same brands with out cross mixing out the window. I have done jobs that were all PPG all the way through as well as mixing transtar primers with ppg bases then prospray clears. As long as you don't mix different brands of activators with others hardeners you should be safe enough. And also follow that brands tech sheets with flash times and mix ratios. Now if your shooting a ppg clear and run out half way through the job and try to finish it of while it is still wet with a different brand of clear, now your introducing a good recipe for disaster as your now mixing different chemicals while still in the flash stage of the paint. But to use a sealer of one brand then a base of another then a clear of yet another, happens a lot of the time. Sure ideally it is nice to work with all the same paint line all the way through, but the truth is that does not always happen.
Thats what I was trying to say just worded much much better
. I don't for see a problem as long as the activators arent switched around randomly mixing things. Or trying to "wet on wet" with two different products. I guess this is like the ford, chevy, dodge argument....everyone has their own opinion and reasons for them. Just like some shops swear by PPG, or dupont, glasurit etc.