When setting the drill guide, it should be positioned how relative to the surface of the assembly?

The drill guide should be positioned flush with the surface of the assembly to ensure accurate drilling. When a drill guide is flush, it aligns perfectly with the surface, which helps in maintaining precise hole placement and proper alignment with the component being drilled. This positioning prevents any misalignment that could occur if the guide were above or below the surface, which could lead to inaccurate holes or damage to the assembly. Moreover, a flush mount minimizes the chances of drilling errors and allows for consistent depth control, which is critical in aerospace applications where precision is paramount. Keeping the drill guide flush supports effective performance and safety standards in assembly processes, ensuring that the integrity of the components is maintained.