I've always just taken my parts to a professional and either powder coated or had them use a 2part Sherwin williams Polane finish.
Both of these are extremely durable.
I'd like to find something (preferably in a one part finish) that along with it's primer, really does the job on some small aluminum parts I'd like to paint myself.
I need durability and durability.
Something like the Polane but more "user friendly"?