If you leave this page, the information you have entered will not be saved!
Are you sure you want to leave this page?
There are all shapes and abrasive grits with these drill brushes, so depending upon how rusty the metal is will determine how aggressive you want to be when selecting the attachment for the drill.
If you have a lot of detail, you can either rent a small portable sand blaster or hire someone
The rust converter from my understanding coats the oxidation on the metal, It will do nothing to smooth out the surface of the existing metal. This product has its benefits but not for something exposed to the weather as the iron railing is.
I have used rustolems "rusty" metal primer on some projects with great results...but this was only for firmly connected rust of a "dusty" nature.
Want to see a picture of rust before I fix it? It doesn't have thick scabs but it does have little bubbles and orange color in many places.