Whenever I go to a paint shop and ask about a metal primer I get the same answer: "we don't use those anymore, use an antioxidant enamel instead, it's easier".
But so far I ain't too happy with the results I've achieved with antioxidant enamels. I'm not good with paint but I've prepared and degreased the metal with care and applied the paint following the instructions in the can and the result is always a fairly delicate coat of paint, any bump or scratch against something hard and the bare metal shows.
In contrast, I've had to strip some metals that had been primed and painted, tha coat was really thick and getting the bare metal to show was very hard, to the point that it was a pain XXXXXX to strip.
I don't know any expert whose advice I can ask for, so I ask here, have you tried these antioxidant paints? Are they worth it for heavy duty stuff if you apply them well? Should I try to get some primer if I'm concerned with contact resistance?
Thanks for your time.