Grind repair area with a power hand grinder or wire brush to bare metal. Paint thinner will help get rid of any residual dust or debris left on the rim.
Rimdoctor
How to fix scratched powder coated rims. This also removes surface contaminates. Sand the damaged powder coat surface lightly with 500 grit sandpaper to remove any paint resistant material on the surface. Clean the rim with paint thinner. Put on rubber gloves and a face mask to protect yourself from the paint thinner. Pour paint thinner on one corner of the lint free cloth. Dip a washcloth in paint thinner and coat the rim lightly in paint thinner.
Wash the exposed surface and surrounding area with a mild detergent or item specific cleaner such as a. The nail polish fix. Weve just outlined the most common touch up and re work methods but there is another technique that can sometimes get positive results. Wash it a couple times to be safe. Apply pressure as you rub the area until the dirt comes off. How to touch up powder coatings.
Remove all loose and flaking coatings from the damaged area with a wire brush or putty knife. Clean the sanded area of the. An uncommon method for fixing small finish imperfections is to put a small amount of the powder in a clear lacquer and use it as touch up paint. Scrub the scratched area of the rim with the wash cloth and be sure to remove any wax dirt or anything else that may be on the rim. Remove any loose paint from the chipped area by scrubbing lightly with a fine grit sandpaper. Grinding will result in a smooth even.
How to repair a chipped powder coat.