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DTM paint is made to stick as well as anything directly to metal. Adhesion of ANYTHING to metal is all in the prep work... paint or primer. DUB is just trying to save you some $$$ and time. DTM paint is perfect for a toolbox. If you're going for some type of "show" tool box, by all means prime it, wet sand it, base it, clear it, cut it and buff it. I'd go the DTM route. Good luck with your project.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.