What is the primary purpose of layout tape when drilling holes in an assembly?

The primary purpose of layout tape when drilling holes in an assembly is to help prevent damage to the assembly. Layout tape serves as a protective layer that guards against potential chipping, scratching, or other forms of damage that might occur to the surface of the assembly during the drilling process. By using layout tape, mechanics can maintain the integrity of the materials, ensuring that any finishing touches or surface qualities are preserved, which is crucial in aerospace applications where precision and aesthetic are key.

In addition, while layout tape can assist in measurement and visibility, its main function aligns with providing a safeguard for the assembly itself. It is designed to minimize errors and potential harm that might arise from the drilling operation. Therefore, its role is critical in ensuring that the final product meets the required standards for quality and safety in aviation contexts.