Who is correct about the use of putty knives when working with body filler?

When working with body filler, the correct usage of putty knives is important for ensuring a smooth application and professional finish. Technician B is correct because a putty knife is typically used to apply and spread body filler over a surface cavity seamlessly. The tool's design allows for better control and an even distribution of the filler, which is critical in achieving a smooth surface after sanding.

In auto body repair, the technique of using a putty knife can vary based on the specific requirements of the job, such as the size of the area to be repaired and the thickness of the filler needed. The flexibility of the putty knife allows the technician to effectively manipulate the filler to avoid air pockets and ensure adherence to the surface.

Understanding the function and proper technique of using tools like putty knives is essential for technicians, as it directly impacts the quality of the surface finish after painting. Therefore, acknowledging Technician B's statement highlights the significance of correct tool use in the auto body repair process.