What are the reasons why spray paint cannot achieve a mirror-like effect?
3 Answers
The reasons why spray paint cannot achieve a mirror-like effect may be due to improper color selection or abnormal spraying process. Here is a detailed introduction about automotive paint: Overview: The main function of automotive paint is to protect the car body from corrosion. In addition, automotive paint can also enhance the aesthetic appeal of the car. Automotive paint is a type of coating. The purpose of a spray booth is to provide a clean, safe, and well-lit environment for automotive painting, ensuring that the spraying process is free from dust interference and guarantees paint quality. Composition: Automotive paint mainly consists of resin, pigment, additives, fillers, curing agents, solvents, etc. Metallic automotive paint usually includes added glitter powder (aluminum powder), while pearlescent paint typically contains mica particles.
When I tried to repair car scratches with spray paint myself, the main reason I couldn't achieve a mirror-like finish was improper technique. If I held the can too close to the surface, the paint would accumulate and form orange peel texture; if too far, the paint mist would disperse, creating dry, sandy spots. The spray gun must be moved evenly and slowly, without sudden speed changes, otherwise the coating becomes uneven. Additionally, I didn't preheat the spray can, so the paint's viscosity was high with poor flowability, making it more prone to clumping. Environment also matters - that day the strong sunlight made the paint dry too quickly before it could level out. Later attempts in cooler weather with careful sanding yielded much better results. Remember, it takes multiple practice sessions to find the rhythm - don't expect perfection on the first try.
As someone who often helps friends with small paint jobs, I find most issues lie in surface preparation. Dust, grease, or moisture on the surface prevents proper paint adhesion; inadequate sanding leaves tiny imperfections that disrupt light reflection. I once sprayed without thorough cleaning—the result was a grainy, dull finish. Primer must be applied in thin, even coats, lightly sanded smooth after drying. When applying topcoat, maintain a 20cm distance and build up layers gradually. High humidity causes paint to bead up, compromising leveling. Patience is key—applying multiple thin coats with proper drying intervals significantly improves results.
