Paint and Refinish Training – “How To Prep” a new OEM body Always wear proper PPE. [00:45] Wash the body panel with soap and water. [01:49] Wipe panel with wax and grease remover. [04:20] Scuff the inside edges. [05:49] Sand outside of panel with 400 to 500 grit sandpaper using a DA or by hand. [06:52] Now you’re ready to clean, prime metal areas with self etching primer, seal, paint and clear. [08:51] Click to see full answer. Then, how do you prepare auto parts for painting?If you plan to strip paint from the car’s bodywork, use 1,200-grit paper or sanding pads to quickly remove the clear-coat and paint. To avoid the headache of trying to match the paint you want to apply to the existing paint on the car, you’ll need to remove the primer and expose the bare metal.Subsequently, question is, what eats car paint the fastest? Let’s run down the most common – and most surprising – 10 things which can damage your car’s paint. Brake fluid. Coffee & Soda. Bird droppings. Gas. Silly string. Shaving cream. Ashes. Shoe polish. One may also ask, how do you replace car parts in paint? How To Paint Your Replacement Plastic Bumper Step 1: Wet Sand Any Imperfections On The Surface Of Your New Bumper Cover. Step 2: Thoroughly Clean All Surface Areas. Step 3: Apply Your Main Base Coat. Step 4: Apply A Clearcoat Layer Of Paint. Step 5: Remove Your Old Bumper Cover And Install The New One. Should I wet sand primer before painting?Choose your coarsest grit (600 if you are sanding primer or bodywork, 800-1000 if you are sanding a finished paint job). Don’t apply too much pressure to the sandpaper. Sand back and forth within the same area, adding more water often. It can never be too wet.