Once the metal has dried dampen a cloth with white vinegar and wipe the surface down.
Oil painting on metal sheet.
This will allow the paint to adhere to the metal.
The acid in the vinegar will act to etch the metal and help the paint adhere.
Using high grit sandpaper or steel wool rub the surface of the sheet metal.
Painting on metal can take many paths.
Oil based paints are the most durable.
After removing loose paint first apply an orbital sander using 60 grit sandpaper working up to 100 grit sandpaper for a smooth finish.
If the sheet metal is smooth to the touch you will need to texturize it before painting.
A metal sculptor may wish to embellish his piece with paint.
It can be decorative painting on household objects or artistic endeavors on found objects from a junkyard or garage.
Analyze the surface of the sheet metal.
An artist is always in search of new and inspiring methods and mediums and painting on metal may be the start of a new journey.
Opt for oil based paint if painting outdoor metal surfaces such as fences patio furniture or backyard grills as well as heavily used indoor items like.
Create a rough surface on the sheet metal.
Apply a wire brush and scraper combo to the metal first to remove all loose paint and rust or to scuff up the surface of aluminum or galvanized metal.