What is the purpose of using layout tape before drilling?

Using layout tape before drilling serves multiple important purposes, one of which is to prevent damage to the assembly. By applying layout tape to the area where drilling is to take place, it acts as a protective barrier that can help to avoid chipping, cracking, or scratching of the surface underneath. This is especially crucial in aerospace applications where integrity and appearance are vital.

The tape also enables a cleaner drilling process by reducing the risk of burrs and debris moving into undesired areas, which could compromise the assembly's performance. While layout tape can indeed mark drilling points and provide visibility, its primary function in the context of preventing damage highlights its essential role in ensuring that the assembly remains intact and functional during and after the drilling process. Thus, understanding that the protective aspect of layout tape is critical for maintaining component integrity helps frame its purpose effectively within aerospace assembly practices.