With the various paintings that exist today, we can almost paint all the surfaces ... It is practical to change decoration without exceeding our budget!
As for the metal, there is a product that you can apply before painting to increase the resistance: white vinegar!
Just wipe your object with a cloth soaked in white vinegar and let it dry for a few minutes before applying your paint.
The acidity of the vinegar will allow the paint to stay more efficiently, and above all, to ensure that the paint does not chip!
A free tip that increases the durability of your project!