What is the most important safety precaution when using an electric drill press?

Clamping the work firmly is the most important safety precaution when using an electric drill press because it helps to secure the material being drilled, preventing any movement that could lead to accidents or injuries. When the workpiece is stable and properly clamped, it significantly reduces the risk of it shifting or spinning during the drilling process, which can cause the drill bit to bind or break. This not only protects the operator from potential harm but also ensures a cleaner, more accurate hole is drilled.

While wearing safety goggles, using both hands to hold the drill, and ensuring good lighting are all important safety practices, they primarily focus on personal protection and operational efficiency. Clamping the workpiece addresses a more critical aspect of safety related to the equipment's operation and the integrity of the task being performed.