

Best paint for outdoor cast iron newel posts
My contractor (who began his life welding) created a cast iron railing w/custom newel top for our upstairs hall (this has been posted before.) I loved it so much that when he began working on our exterior two story porch I requested he create similar newel post caps (unsure if I’ve said this right) for the porches, will be 12 total, cast iron toppers on wooden posts.
The price to have them professionally painted (powder coat) is going to be $110 each. Seems high. Is this something I could do with some Spray-on Rustoleum, provided I purchase the metal specific primer and paint, or whatever the best product would be? Or is that super risky? Any advice from those with experience would be most appreciated.