Do I still need to put a primer on wrought iron if I prepare it with a steel brush and sand paper and I'm using an exterior grade enamel paint with DTM?
DTM paint is formulated for use on metal that's not primed, so it's okay to use it on unprimed wrought iron. However, it's typically best to use a primer even if you've prepared the wrought iron well. Primer helps the paint stick to the wrought iron, creates an even surface, and extends the life of your paint job.