What should you be cautious of when drilling or reaming?

When drilling or reaming, it is crucial to avoid using hands to support the structure due to safety concerns and the potential for damage. The process of drilling or reaming generates significant force and vibration, which can lead to accidents if hands are placed in the area of operation. Supporting the workpiece with proper fixtures or clamps ensures stability and minimizes the risk of unexpected movement during the drilling process.

In contrast, the weight of the drill, the sizes of the drill bits, and the length of the drill all pertain to tool factors rather than safety concerns related to personal handling of the workpiece itself. Proper handling and support techniques are vital to maintain safety and ensure accuracy, reinforcing the importance of not relying on hands for support during drilling or reaming operations.