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ASE Practice Test (B2: Painting & Refinishing) Flashcards

6 cards from real ASE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 ASE Practice Test (B2: Painting & Refinishing) flashcards as text

  1. Fish-eye defects are appearing in a freshly sprayed basecoat. The MOST likely cause is:

    Answer: Silicone or oil contamination on the surface

    Fish-eyes are caused by silicone or oil contamination on the surface being painted. The paint cannot wet out over these contaminants and pulls away, forming circular craters. Proper surface cleaning and a fish-eye eliminator additive can help prevent this.

  2. A technician is mixing a two-stage urethane clearcoat. The manufacturer's ratio is 4:1:1 (clear:hardener:reducer). If 16 oz of clearcoat is used, how much hardener is needed?

    Answer: 4 oz

    In a 4:1:1 ratio, for every 4 parts of clear, 1 part of hardener is required. With 16 oz of clearcoat: 16 ÷ 4 = 4 oz of hardener. Mixing ratios must be followed precisely to ensure proper cure, hardness, and gloss.

  3. When color sanding a clearcoat, the technician notices sand scratches remain visible after polishing. The MOST likely cause is:

    Answer: Starting with sandpaper that is too coarse

    Starting with sandpaper that is too coarse leaves deep scratches that require progressively finer grits to remove. If the technician skips grades or the coarse scratches are not fully removed before moving to finer sandpaper, they will remain visible after polishing.

  4. A vehicle is being spot-repaired. The technician must blend the new color into the adjacent panels. The PRIMARY reason for blending is:

    Answer: To compensate for metamerism and color shift with age

    Blending is required because paint changes color slightly as it ages and weathers. Metamerism (color shift under different lighting) also plays a role. By feathering new paint into adjacent panels, the transition is made invisible even if a slight color difference exists.

  5. Which respirator type provides the BEST protection when spraying isocyanate-based (urethane) paints?

    Answer: Supplied-air respirator (SAR) or PAPR with combination cartridges

    Isocyanates are highly hazardous sensitizers. OSHA and manufacturers recommend a supplied-air respirator (SAR) or powered air-purifying respirator (PAPR) with combination organic vapor and particulate filters for maximum protection. Standard organic vapor cartridges alone are insufficient.

  6. A technician notices orange peel texture in a cured clearcoat. Technician A says this can be corrected by wet sanding and polishing. Technician B says orange peel is caused by excessive flash time between coats. Who is correct?

    Answer: Technician A only

    Technician A is correct — orange peel in cured clearcoat can be corrected by color sanding with progressively finer grits followed by machine polishing. Technician B is incorrect; orange peel is typically caused by insufficient flash time, incorrect gun setup, or too-fast evaporating reducer — not excessive flash time.