When I was a kid(a long time ago) our next door neighbor was developing the electrostatic paint process in his garage. It was pretty cool as he was always blowing up or setting on fire lots of stuff. Sold the process to Detroit as I recall, and moved to the high rent district.
In more recent times, when I was still a working stiff, we had a electrostatic painter come in one night and paint all of the metal file cabinets and desks in our office. No mess, no fuss.
I bet you could hire one of those guys to spray your plane.
Jim Berry
RV-10