The bigger the damaged panel is, the harder it can be to repair it. Follow the 3M SOP for Large Damage Repair below to achieve a smooth, well-prepared metal surface where the original paint layer has been broken and the damage has significant denting.

Mike Cohen Breaks Down Aquamist vs. Overspray Plastic Sheeting
Mike Cohen, Private Label Brand Manager, discusses the Smart Advanced Body Filler family of products, which offers multiple tiers tailored by performance, characteristics, application, and price point.