Which defect results from surface contamination and appears as small craters?

Which defect results from surface contamination and appears as small craters?

• A. Fisheye
• B. Orange peel
• C. Runs
• D. Overspray

Answer: (A)

When the surface isn’t clean, the coating can’t wet properly and will pull away around any contaminant, forming tiny round gaps. Those circular, crater-like spots are called fisheyes. They happen because substances like oil, wax, or silicone on the surface prevent the paint from spreading and adhering, leaving a small hole with a ring around it. This is distinct from orange peel (a pebbled texture from poor leveling), runs (drips), or overspray (paint on unintended areas). So the defect described as surface contamination causing small craters is fisheye. To prevent it, ensure a clean, silicone- and wax-free surface before painting.

When the surface isn’t clean, the coating can’t wet properly and will pull away around any contaminant, forming tiny round gaps. Those circular, crater-like spots are called fisheyes. They happen because substances like oil, wax, or silicone on the surface prevent the paint from spreading and adhering, leaving a small hole with a ring around it. This is distinct from orange peel (a pebbled texture from poor leveling), runs (drips), or overspray (paint on unintended areas). So the defect described as surface contamination causing small craters is fisheye. To prevent it, ensure a clean, silicone- and wax-free surface before painting.