Louisiana is HORRIBLE!!! The humidity is ridiculously high all year round. Spray primers always come out gritty and nasty. Best time to spray prime outside is December - January because the air is a little drier.
Automatically Appended Next Post: djphranq wrote:yeah... I'll see if I can dig up a spare model/bit I can test out.
(Just thought I'd strike up a topic for discussion or sharing.)
It's all about the humidity. If you're unsure about your climate just check out the weatherchannel.com. They have your area's humidity level. If your air is relatively dry (I'd say 40% and below) then you won't have any problems. But a place like Louisiana where our humidity is always 80% and above will cause FRUSTRATING results when priming outside.
If you are unsure about the elements, you can always prime indoors as long as you have ventilation in the room. Also use a drop cloth to cover the area and nearby walls as the fumes accumulate on surfaces and cause stains that can be a pain to scrub out. I prime indoors all the time now to avoid the weather hazards, it's completely safe as long as you are not spraying the can right next to your face. Just use common sense.
One last thing, if you mess up your priming job, don't fret. Throw the messed up models in a container of simple green or super clean and the crappy prime job will fall off within a day.