What is the primary function of the disc sander in airplane assembly?

The primary function of a disc sander in airplane assembly is to effectively remove sharp edges from materials. This tool is particularly useful in ensuring that the edges of metal or composite components are smooth and safe to handle, thereby reducing the risk of injury during assembly and maintenance.

By utilizing a rotating abrasive disc, the sander grinds down excess material and effectively breaks the sharp corners created during cutting or machining processes. This smoothing process is integral to airplane assembly as it not only enhances safety but can also improve the overall fit and performance of parts when they are assembled together.

While shaping materials, finishing surfaces, and polishing metals are important tasks in the assembly process, the fundamental role of the disc sander is primarily geared towards edge treatment and ensuring that all components are free from sharp protrusions. This focus on edge safety aligns with industry standards for maintaining a safe working environment and enhancing the longevity and functionality of the aircraft components.