I spray outdoors all the time. John's advice is spot on, however, I do without the wardrobe. I hang my bodies and necks off of the frame for a wooden swing that hangs in my yard. I make certain it is out in the open, away from too many trees. The nitro skims over fast enough that usually anything that hits it doesn't stick very often. If it does and it is small, you can carefully remove it and then just continue to spray over it. I've leveled the finish after all the coats are laid down and it has cured for 4 or 5 weeks, and the defects have all dissappeared.
If it's something large, like a big bug, wait a few days, sand the defect out, and start laying down finish again. Them's the breaks when spraying outdoors.
One other thing I do is keep a close watch on the coats until they stop being tacky. If you catch whatever it is while the coat is still wet, I've often had the lacquer flow out and the defect dissappear on it's own.
Also, at least here in Virginia, it has been my experience that spraying late in the evening is the worst time for blush. I usually stop spraying when it begins to cool down(6-6:30). Don't know about mornings, as I never start before 9 a.m.
As far as spraying in the sun, I do it a lot, and have for the past 4-5 years. I've had no issues with bubbling of the finish, but I lay on very thin coats. 3 thin passes for me is 1 coat. That may have something to do with it. I also at this point use aerosol lacquer, which I warm in hot water before spraying, which may mitigate that as well. I plan to purchase a compressor and proper spray equipment this year.
This was shot outdoors using aerosol lacquer.
This was shot outside with automotive lacquer.
spraying outside can work well. I say go for it.
P.S. : Grumpy is right. Nitro fumes are highly toxic. If you value the health of yourself and your family, do not let it cure in your home. I hang mine in the shed out back for a minimum of 4 weeks.
