Not so fast, Dan. I have paint guns, plus a detail gun and an air brush. You will find, when you start using these, that the clean up time and effort goes up, way up, sky high (versus rattle cans). You have to run solvents thru them several times to get everything cleaned out. And you will lose (waste) a fair amount of paint using them because of what gets lost in the cleaning process. For a model rocket, you'll use (lose) more paint priming the system (so to speak) than you'll put on the rocket.
As frustrating as rattle cans can be, after using the alternatives, I came to love rattle cans
If all I had to do, to clean up a spray gun or air brush, was to turn it upside down and spray for a few seconds, then wipe the tip with a towel wet with solvent, that would be great. That is, using the rattle can takes 2 minutes of shaking before I paint, and less than two minutes of clean up after. And clean up uses less than a table spoon of solvent.
For the airbrush, I'll use a cup of solvent or more, and spend 10-15 minutes getting everything clean. More with a gun.
Don't get me wrong, brushes/guns have some merits, such as allowing you to custom mix a color, or when you're painting a large rocket (using lots of paint). But the rattle cans are very effective when you consider cost, time and effort.
Doug
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