The best paint finish you will normally come across is on your car, and lives a very hard life too, what with sun, frost, rain, snow, impacts bird crap (!) etc....I haven't seen any mention of automotive two packs on bass forum, don't know why, maybe a good reason.
If you did the prep' before hand and used a suitable primer this maybe a cost effective way to go?
Paint shops do use an oven but it isn't that hot, more warm.