I've painted body panels with my old 30 gal Campbell Hausfeld compressor. It cycles a bit, but wasnt bad. I had some imperfections(specs) the 1st time. I eventually put a cooler and dryer between the compressor and tank, then a dryer on the exit of the tank to the main air line. I also put one of those desecant dryers on the hlvp gun from harbor freight. My results were greatly improved. Idk, if the specs were from water or not. but there were no more specs. I have to say when it comes to painting I have no clue what I'm doing.