I used oil based Tremclad rust paint from Canadian Tire for my locost. It's not the most durable paint and it chips easier than I'd like, but it's not too bad. Easy to spray, easy to touch up and fix mistakes, easy to clean, and the most toxic part of the job is lacquer thinner. I can't remember where I read about it, but I thinned it about 3:1 or 4:1 with lacquer thinner, then sprayed it with a cheap Princess Auto spray gun. Two pretty light coats, then one a bit heavier so that it levels out the surface. I let each coat flash off and get tacky before putting on the next one, and all three coats were in one day. Warmer conditions would have been nicer when I did mine, I waited a week to put the car together after painting and the paint was still very soft. I think it took a few months to really cure and harden up. Apparently using mineral spirits like Tremclad recommends makes it take way longer, sometimes over a year to fully cure the paint. Plus you have to wait a long time between coats with mineral spirits.
This is 2 or 3 years after I painted it and freshly waxed. It's far from a show finish, but pretty good for the first time ever using a spray gun and no polishing or sanding after painting it. If I were doing it again I'd wet down the floor of my garage to keeps dust down though. I don't know how the paint would hold up in the sun, as my car stays in the garage when I'm not driving it. I used a rattle can self etch primer on all the aluminum panels and a rattle can sandable primer on the fiberglass.
Kristian
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V6 in a book frame build. Now registered.
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