Why might a technician choose to use a flexible filler?

A technician would choose to use a flexible filler primarily because it is ideal for repairing plastic components that need to retain some level of elasticity after the filler is applied. Many automotive components, especially those made of plastic, can be subjected to flexing or movement during normal use. If a rigid filler is used, it may crack or separate from the plastic under stress, leading to potential repair failure. By using a flexible filler, the technician ensures that the repair can withstand the operational flexibility of the component, thereby promoting durability and longevity in the repair.

This characteristic is crucial when working with parts like bumpers or panels that experience vibrations and impacts. The use of a flexible filler minimizes the risk of further damage, ensuring the repair can maintain its integrity over time.