6 Ways to Sand a Car for RepaintingwikiHow
· Sand it down with 40 to 50grit sandpaper to start. You can hand sand or use a power sander depending on where the rust is. Use your sandpaper to strip off the rust and the surrounding paint until you can see bare metal poking through. This method works well for surface rust or rust that hasn t penetrated all the way through the body of your car.
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