Ivan Arango
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Another tip is to have a game plan for spraying bumpers with alot of edges and openings like the last generation bmw 3 series. That bumper has so many sharp lines that if you dont divide the bumper into 3 sections while spraying clear your more than likely going to get dry spots in the openings and a bunch of runs on those sharp body lines. When you divide the bumper into sections, it makes it easier to know when to let off the clear so you dont load up the edges so much.
Like the other have said I hit all the edges first and spray the openings from the backside. Then ill spray the openings from the front and continue to spray the rest of the bumper. Take this as you may, the worst thing you can do spraying clear is to hesitate because thats when you get your runs. Make that bumper your b***** lol. I always spray my clear near the verge of running it. You gotta be bold sometimes to get a good finish off the gun. Its usually pays off and occasionally youll get a run. But once you geet that confidence with the clear itll seem like a no brainer. Good luck
Im working at an independent shop at the moment and we spray ppg omni plus and envirobase. Here in miami its ridiculously hot and humid especially for this time of the year. The waterbase takes forever to dry even with the air movement in the booth. Our booth isnt temperature controlled either but with the temps I normally see its like a mini oven haha