ASE Painting & Refinishing 2

Question 1

What is the primary purpose of applying a primer-surfacer before basecoat?

Accepted Answer

To fill minor imperfections and provide a sandable, uniform surface

Answer

To add gloss to the final finish

Answer

To speed up the drying of the clearcoat

Answer

To increase the metallic flake orientation

Question 2

A solvent that evaporates too quickly in hot conditions most commonly causes which defect?

Accepted Answer

Dry spray or poor flow

Answer

Runs and sags

Answer

Fish eyes

Answer

Wrinkling

Question 3

What does the term 'flash time' refer to in refinishing?

Accepted Answer

The interval allowing solvents to evaporate between coats

Answer

The time the spray gun trigger is pulled

Answer

The time a panel spends in the bake cycle

Answer

The exposure time of UV-cured primer

Question 4

Fish eyes in a fresh paint film are typically caused by what contaminant?

Accepted Answer

Silicone, oil, or wax on the surface

Answer

Excess hardener

Answer

Too much reducer

Answer

Low booth temperature

Question 5

When color-matching, what is the purpose of spraying a 'let-down' or test panel?

Accepted Answer

To verify the color match and metallic appearance before painting the vehicle

Answer

To check primer adhesion

Answer

To measure dry film thickness

Answer

To test gun pressure only

Question 6

Which spray technique helps avoid mottling in metallic basecoats?

Accepted Answer

Consistent gun distance with proper overlap and adequate flash between coats

Answer

Heavy wet coats applied close to the panel

Answer

Increasing reducer beyond recommended ratio

Answer

Spraying with no overlap

Question 7

What is the function of a hardener (activator) in a two-component (2K) coating?

Accepted Answer

To chemically cross-link the resin so the film cures

Answer

To thin the paint for spraying

Answer

To add color tint

Answer

To slow flash time only