Why does rusting occur?
Rusting occurs because of the reaction between unprotected metal and air containing oxygen. Together they start the process of rusting. Once rusting begins, it continues over the entire body of metal.
In cars, one slight scratch can begin the process of rusting and worsen the condition over time.
How can I prevent rusting in my car?
The damage rust does is irreversible. A smart car owner always tries to prevent rust in the first place. There are materials available at autobody paint suppliers such as POR-15® which is an excellent rust preventer. They provide an impenetrable barrier against rust right on top of the metal your car is made up of.
What can I do if rusting has already started?
Once rusting has begun, there are a few steps that can take you to clean metal again. Here they are as follows.
1. Use a tarp to define the area which needs to be worked upon. Secure the borders of the non-workable area otherwise highly visible lines showing drastic color difference will emerge as the paint dries.
2. Remove the paint near the rusted area using a sanding tool. Sanders of 80 grit to 150 grit can be used from beginning till the end of the sanding process. Sand the primer as well if rust has reached it too.
3. Use a metal grinding wheel very carefully to grind off any remaining rust particles or smoothening any remaining pits.
4. To finalize the cleansing procedure remove microscopic particles of rust, wash the area with phosphoric acid available at autobody paint suppliers.
5. Fill up any remaining dents or holes by the use of a body filler.
6. Give the area a finish by the use of sand paper.
7. Apply three coats of primer with an interval of 3 minutes each. Let it dry for around 24 hours.
8. Apply paint and let it cure for approximately 48 hours.
