Which tool is essential for preventing drill wandering when removing screws?

Using a center punch is essential for preventing drill wandering when removing screws. The center punch creates a small indentation or dimple in the surface of the material, providing a stable point for the drill bit to start. This helps guide the drill precisely where it's needed, reducing the likelihood of the drill bit slipping off the screw head.

When screws are being removed, especially if they are damaged or have a stripped head, it's crucial to ensure that the drill remains in alignment with the screw. A center punch allows for this alignment to be maintained, leading to a more efficient and effective screw removal process. Without this tool, the drill bit may wander, causing damage to the surrounding material or making it harder to remove the screw.

Other tools like a hammer, screwdriver, or pliers do not serve the same function as a center punch in this context, as they do not create the necessary point of contact to guide the drill accurately.