In reply to a post by I've heard of dampening/wetting the floor around the car prior to spraying in order to keep some of the dust and dirt down.
I screwed up my paint so many times it was not funny... total sand off 4 times!.
- is plenty of air at the gun (30psi with a gauge)
- Watch a great video on spray gun setup from OHW (stands for one hit wonders on youtube) called "spray gun setup"
*** that video alone finally gave the key to proper spray setup....the paint job was done with a Harbor Freight $10 gun.... 1.5mm tip for topcoat and 1.3mm tip for clear