I teach high school and have used a Paasche airbrush in my classroom for
several years. Mine is connected to a CO2 tank with gauges to monitor
pressure and amount still in the tank. I get refill tanks from the school
cafeteria--the Pepsi man replaces the empty ones there. I have a light box
to help keep overspray confined. I use only water-based paints and insist on
immaculate cleaning after each use. My students love this piece of equipment
and have produced some very fine work. Each student in my Crafts class is
required to airbrush a T-shirt or sweat shirt. Students in my Art IV class
have a series of exercises to complete. I would be happy to share these
projects if anyone is interested.
I am not sure, however, that I would purchase an airbrush for elementary.
It takes a lot of maturity, since only one person can airbrush at a time,
and since the airbrush MUST be cleaned after each use.