What defect is fisheye?

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Prepare for the Carver NOCTI Collision Repair and Refinishing Technology Test. Utilize multiple choice questions with hints and explanations. Elevate your chances of success and become a certified professional in the collision repair industry!

Multiple Choice

What defect is fisheye?

Explanation:
Fisheye shows up as small crater-like voids in the coating where the paint did not wet the surface properly because of a contaminant. When a contaminant such as silicone, oil, wax, or dust sits on the substrate, it reduces the surface energy and repels the paint. The paint pulls away around the contaminant, leaving a circular pit with a relatively clean center. That’s why the best description is small craters in the paint caused by contamination. This isn’t a smooth, even finish, and it isn’t due to overheating or blistering. It’s about poor wetting from surface contamination. To prevent fisheye, thoroughly clean and degrease the surface, wipe with tack cloths, ensure masking and cleaners are silicone-free, remove wax or grease residues, and use appropriate sealers or isolating coatings where needed.

Fisheye shows up as small crater-like voids in the coating where the paint did not wet the surface properly because of a contaminant. When a contaminant such as silicone, oil, wax, or dust sits on the substrate, it reduces the surface energy and repels the paint. The paint pulls away around the contaminant, leaving a circular pit with a relatively clean center. That’s why the best description is small craters in the paint caused by contamination.

This isn’t a smooth, even finish, and it isn’t due to overheating or blistering. It’s about poor wetting from surface contamination. To prevent fisheye, thoroughly clean and degrease the surface, wipe with tack cloths, ensure masking and cleaners are silicone-free, remove wax or grease residues, and use appropriate sealers or isolating coatings where needed.

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