"Rustoleum "protective enamal" is among the best rattle can paint I've found, but it takes a couple of days to harden up. It is fairly low VOC compared to quick dry paints. One trick a friend taught me is to apply WD-40 to the clean work and wipe it off (leaving just a trace) before spraying....Not sure why, but this makes this particular paint stick great."
Too weird. One thing I have experimented with is appliance paint, which claims to be epoxy. It seems a little soft, so I post cure it. In summer there are lots of places you can put a frame that will cook it pretty well. I also have a 170 degree oven. Colours are very limited but for a beater, black or white, etc... are pretty good.