DIY paint booth fan question

DesertRat said

Water based paint is the thing-maybe. Paint your car with water based exterior latex and a roller from home depot. Enough threads here about the popular rustoleum/brush-roller paint jobs that turn out great. And don't forget to protect yourself from the sanding dust!

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And you get 100% transfer efficiency using a roller or a brush!!!!! Nice one!!!

Don't kid yourself about waterborne paint systems. Just because it says "waterborne" doesn't meet it's all that safe. It's safer than solvent based products but not by much. The solvents used in waterborne finishes are "water soluble". That means they mix with water but they are still solvents.