Red Seal Auto Body and Collision Technician Practice Exam

What is a major disadvantage of using too much body filler?

1. It can lead to cracking and premature failure of the repair.

2. It makes the vehicle heavier.

3. It increases the cost of materials.

4. It requires longer drying times.

The correct answer is: It can lead to cracking and premature failure of the repair.

Using too much body filler can lead to cracking and premature failure of the repair due to the material's properties and how it is applied. Body filler is designed to be a thin layer that fills in imperfections or dents in the vehicle's surface. When applied excessively, it can create a bulky layer that is not only heavier but also less stable. As the filler cures, it can shrink and harden, meaning if it's too thick, the weight and stress on the repair can cause it to crack over time. This cracking can compromise the integrity of the repair, leading to further damage and the need for repetitive work to restore the area. Additionally, the aesthetic finish can suffer due to uneven surfaces or poor blending with the surrounding paint, further emphasizing the disadvantages of overusing body filler. The other options, while they may seem plausible, are not as critical to the overall effectiveness and longevity of the repair as the risk of cracking. Increasing the weight of the vehicle, while true, is typically a secondary concern compared to the structural reliability of the repair. Similarly, while excessive body filler may lead to increased costs or longer drying times, these factors are not as significant as the potential for repair failure due to cracking.