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...Doug, you would be suitably horrified at some of my experiments along these lines. My only defense is that, in the process, I've managed to get some exceptional colors, using stuff that I can source locally. I do have a small compressor and a couple of guns (not great guns, but workable guns about the level of what you can get at Harbor Freight.) So with enough fiddling and experiment on practice pipes, I can spray almost anything out there in the back yard, in the shade.

That, and I work for cheap.