Many years ago, my van was painted with a brush, poorly.
As I neither have the funds, nor the location or tools to make it look proper, I have been stuck with this hand painted method.
I've also been battling roof gutter rust, and most recently, bottom of the door rust.
So my third door is usually stuffed with fan belts, hoses and a bunch of other crap, and when I took it all out and stick a shop vac down there, it just kept getting uglier.
I evetually dug out and removed all the loose rust and treated it with several dousings of Ospho and started getting some layers of rustoluem yacht enamel over it, but there was still this hole in the bottom of the door.
I had some extra epoxy mixed from repairing a surfboard, and decided not to waste it. So I saturated a 4x12 inch piece of thick carbon fiber and slapped it over the hole. The brown is epoxy I mixed wood flour into to make a thixotropic paste like bondo. Not pretty but it should allow any moisture to drain out the vents and keep stuff from falling out the hole in the door, perhaps even slow the rust enough so I don;t have to look at it for another 5 years.
I am nearly done with the paint job. I Started with the back doors back in November and now all that is left is the front two quarter panels, the hood and that section under the grille.
Looks okay from a distance. Like a washed sneaker. Anyway the Rustoleum yacht enamel can be waxed so it should be easier to keep clean.
Better anyway. Man, do I hate painting.