What is the primary first step in drilling a pilot hole once the drill motor is set up?

The primary first step in drilling a pilot hole is to ensure that the tip of the pilot bit is aligned with the center of the fastener marks. This alignment is crucial because it guarantees that the hole will be drilled accurately in the intended location, which is essential for the successful installation of the fastener. Proper alignment helps to prevent misdrilling, which can lead to structural issues, decreased holding strength of the fastener, or potential damage to the assembly.

While centering the bit with the assembly edge, securing the assembly in a vice, and checking the drill bit for sharpness are important steps in the drilling process, they are secondary to the alignment of the bit with the fastener marks. Proper setup and alignment directly impact the effectiveness of the drilling operation, making it the top priority before proceeding with the drilling itself.