If the gun is too close to the surface, what problem may result?

When the spray gun is positioned too close to the surface during painting, the primary concern is that the paint has insufficient time to atomize properly before hitting the surface. This can lead to a scenario where the paint is applied in a thick layer. As the thick paint dries, it can create heavy sagging or runs, often referred to as 'sags' or 'drips.' The viscosity of the wet paint tends to cause gravity to act on it, resulting in those imperfections that detract from the overall finish.

On the contrary, positioning the gun too close does not contribute to a dry paint coat or a higher gloss finish; instead, these conditions are more likely to be the outcome of incorrect application techniques or environmental factors. Furthermore, while adhesion is important, applying the paint too thickly can actually hinder proper adhesion due to trapped solvents and improper curing. Thus, the problem resulting from incorrect gun distance is indeed sagging and heavy application of paint.