Airbrush Moisture Issue

I think the problem is with the alcohol. The spraying of alcohol thru the venturi of the airbrush nozzle creates a low pressure and rapid cooling, thus creating a medium for moisture condensation. I once saw an alcohol burning dragster engine that would get rhime ice to form around the carbs on a humid day. Alcohol is a water attractant. Try using some glycol or a form of, to thin your paints. That is one of the ingredients that make up commerical acrylic thinners. A friend of mine uses windshield washer fluid, the extreme cold temperature type. He airbrushes in a screened in patio which gives great ventilation and he has great results.

There are moisture traps which can be inserted between the air pump and the air brush. For instance,

Thanks for the replies, guys. FWIW, in response to the one person who mentioned alcohol, yes, it is worse using alcolhol as a thinner for acrylic paints but I still have the problem to a lesser degree using more traditional acrylic thinners like those made by Tamiya. I'm going to look into getting a moistire trap on the line.

T.B.