What happens if air pressure is too high?

• A. Excess overspray and dry spray
• B. Cleaner finish
• C. Faster cure
• D. No impact on finish

Answer: (A)

Air pressure sets how finely the paint is atomized and how the spray settles on the surface. When the pressure is too high, the paint is broken into very fine droplets and the spray becomes more turbulent. That leads to excess overspray, with more coating ending up on surrounding areas and wasted material. At the same time, the high-velocity air can cause the paint to dry in the air or right as it hits the surface, producing a dry spray texture—rough, textured, and uneven rather than smooth. Together, these issues prevent a clean, uniform finish. Reducing the air pressure to the recommended setting helps achieve better atomization, a proper spray pattern, and a smoother final coating.