Rusty panels can easily be prepared for paint.
Automobile panels become rusted for many reasons. Scratches or scrapes that go through the paint and expose the bare metal can become rusted in less than 24 hours. Panels that have been sanded and repaired but not yet covered in paint can become covered in a layer of surface rust. Learn prepare a rusty automobile panel for paint so you can use the panel instead of buying a replacement.
Instructions
1. Sand the panel with 180 grit sandpaper to remove loose rust from the surface. Once the panel has been sanded completely, spray a moderate coat of rust remover over the rusted areas. Rust remover spray bonds the rust with the metal, creating a sandable surface. The rust turns black and dries within 30 minutes. It also prevents the rust from spreading into the metal.
2. Use 300 grit sandpaper to sand the panel until it is smooth. The rust remover spray can be used on repaired areas; sand them until they are as smooth as the rest of the panel. Wipe the panel with wax and grease remover and a microfiber towel to remove dust, wax or grease particles left behind.
3. Spray the panel with a thick coat of primer. Primer helps the paint adhere to the panel. Primer also acts as a layer of protection between the metal panel and the elements, protecting the panel from rust until it has been painted.