Which tool is used to safely bend large sheets of metal?

The tool specifically designed for safely bending large sheets of metal is a brake. A brake, particularly a metal brake, allows for precision bending and forming of metal without damaging the material. It operates through mechanical leverage, providing the technician the ability to create consistent and accurate bends across various types of metal sheets. This is especially important in HVAC work, where precise dimensions and angles are crucial for fitting components properly in ductwork systems.

Using a brake also minimizes the risk of injury, as it offers better control compared to using other tools. Other tools, like a saw or shear, are primarily meant for cutting metal, not bending it. A hammer might be used for minor adjustments or shaping, but it lacks the capability to make clean, consistent bends in larger sheets. Hence, the brake is the most appropriate and safe choice for this task.