Red Seal Automotive Refinishing Technician Practice Exam

What is the result of improper mixing of two-component paint?

1. Perfect paint application

2. Bubble formation and uneven texture

3. Increased resistance to scratches

4. Longer drying times

The correct answer is: Bubble formation and uneven texture

Improper mixing of two-component paint typically results in bubble formation and an uneven texture. This occurs because the components of the paint—the base and the hardener—must be blended in specific proportions to achieve the correct chemical reaction. When mixed incorrectly, the paint may not cure properly, leading to entrapped air that manifests as bubbles on the surface. Additionally, the uneven interaction between the components can create a surface that lacks uniformity, affecting the overall appearance and finish quality. Other outcomes like perfect application or increased resistance to scratches are not associated with improper mixing; instead, these are often the results of a well-executed mixing and application process. Longer drying times can occur with some mixing issues, but bubble formation and uneven texture are immediate, visible consequences of incorrect ratios or mixing techniques.