What does "wet sanding" help to achieve in paint refinishing?

Wet sanding is a technique used in paint refinishing that involves sanding the painted surface while it is wet, typically using water or a lubricant. This method helps to achieve a smoother finish by effectively leveling the paint surface, removing imperfections like dust nibs, orange peel texture, and other flaws that can occur during the painting process. The wet sanding creates a finer surface texture compared to dry sanding because the water helps to carry away debris, preventing it from scratching the surface continuously.

Additionally, using water reduces the friction and heat generated while sanding, allowing for a more controlled and precise process that minimizes the risk of damaging the paint layer below. The end result is a polished surface that is ready for the final stages of the refinishing process, such as buffing and polishing, leading to a high-quality finish on the vehicle.