Which type of file is specifically designed for rough work?

A double-cut file is specifically designed for rough work because it features two sets of parallel ridges that cross each other, creating a more aggressive cutting action. This design allows the file to remove material quickly from a workpiece, making it ideal for shaping and smoothing rough surfaces. The double cutting action increases the efficiency of material removal, allowing for faster progress on projects that require heavy stock removal.

While flat, half-round, and square files each serve important roles in filing tasks, they are typically utilized for more precise and fine finishing work rather than for rough shaping or removal. Flat files are great for flat surfaces, half-round files are versatile for both flat and rounded surfaces, and square files are used to create sharp edges and corners. These files usually have a finer cut compared to double-cut files, making them less suited for initial rough work.