Application of heat after is important too, I agree. I've put frames into a doghouse sized plywood box with a oil-filled radiator, and I've put them into a hot attic in the summertime, inside a large plastic closet/suit hanger storage thingee that people use for moth-proofing to keep the dust from settling. That worked well here in Tejas where the outside temp is over 100 anyways. I paint early in the AM and then leave it in the heat for at least two days to bake it on, then clearcoat. I haven't been baking the clear - maybe I should? Opinions?
I've heard of people getting junker cooking ovens and laying them on their backs out in an open space under a tent or teepee, etc. to try to simulate baked enamel finish but I have not tried that. Sounds dangerous.
I don't have a favorite brand yet. Still trying krylon vs rustoleum and occasionally mixing the two when using the black. I've gotten to where if I am very careful and very thorough I can do okay with a rattle can but it never looks as good as powder coating, and by the time I've gone to all the trouble of sanding between coats and clear coating, etc I usually wish I had just taken it to the powder coater. But the expense keeps me where I am usually and for now I'm sticking w Krylon out of inexperience. I'm happy to try whatever gets the most thumbs up however.