I-CAR - Inter-Industry Conference on Auto Collision Repair Certified Non-Structural Panel Repair Questions and Answers

Question 1

A technician is preparing a repaired area on a steel door skin for primer.
After completing the body filler work and sanding it with 150-grit sandpaper, what is the next recommended step in the feather, prime, and block process according to industry standards?

Accepted Answer

Featheredge the surrounding area with 180-grit, followed by 220-grit and then 320-grit sandpaper.

Answer

Apply a thick coat of high-build primer directly over the 150-grit scratches.

Answer

Wet sand the entire panel with 800-grit sandpaper before priming.

Answer

Apply glazing putty over the entire repair area to fill any remaining imperfections.

Question 2

When performing a two-sided repair on a crack that penetrates a plastic bumper cover, which of the following is a critical first step for the backside repair?

Accepted Answer

Apply a thin coat of repair material, embed reinforcing mesh, and then apply another coat of material over the mesh.

Answer

Apply adhesion promoter to the front side of the crack.

Answer

Use a flexible polyester filler to bridge the gap on the backside.

Answer

Heat the plastic with a heat gun until it becomes molten to fuse the crack together.

Question 3

Which of the following is a primary reason that repairing a large, sharp dent on an aluminum hood is significantly more challenging than a similar dent on a mild steel hood?

Accepted Answer

Aluminum work-hardens at the site of the damage and does not have the 'memory' of steel.

Answer

Aluminum is much softer and tears more easily during repair.

Answer

Specialized aluminum filler is required, which is difficult to apply.

Answer

Weld-on dent pulling equipment for steel can be used on aluminum with a lower power setting.

Question 4

A technician needs to restore corrosion protection to the inside of a new non-structural rocker panel after installation. According to I-CAR recommendations, what is the generally preferred method for treating this enclosed area?

Accepted Answer

Applying anti-corrosion compound alone using a 360-degree spray nozzle wand.

Answer

Injecting self-etching primer followed by a heavy wax-based coating.

Answer

Thoroughly cleaning the interior surface and then applying a two-part epoxy primer.

Answer

Filling the entire cavity with sound-deadening foam to displace moisture.

Question 5

A vehicle comes into the shop with several small, shallow dents on the trunk lid where the paint is not broken. The owner wants the most efficient and cost-effective repair that preserves the factory finish. Which repair method is most suitable for this scenario?

Accepted Answer

Paintless Dent Repair (PDR).

Answer

Grind, fill, prime, and repaint the entire trunk lid.

Answer

Weld-on dent removal followed by minor touch-up paint.

Answer

Heat shrinking the dents with a torch and dolly.

Question 6

Which of the following materials should NOT be used for cosmetic repairs on a flexible plastic bumper cover due to a lack of flexibility and potential for adhesion failure?

Accepted Answer

Standard body fillers or metal polyester glazes.

Answer

Two-part urethane adhesives designed for plastics.

Answer

Adhesion promoter specifically formulated for plastic substrates.

Answer

Flexible parts repair material.