To make a hole in an exterior wall for placing a window, carpenters typically use a:

Carpenters commonly use a reciprocating saw for cutting holes in exterior walls when installing windows. This tool is well-suited for the task because it features a long, straight blade that moves back and forth, allowing it to easily penetrate wall materials like wood, drywall, or even some types of masonry with the appropriate blade attachment. The versatility and portability of the reciprocating saw make it an ideal choice for making precise cuts in various orientations, which is essential when fitting a window frame accurately.

In contrast, while a band saw is excellent for cutting wood into various shapes, it is not portable and not typically used for making large openings in walls; it's more suited for detailed or curved cuts. A drill press is primarily designed for drilling holes and lacks the capability to make larger cuts needed for window openings. Lastly, a torque wrench is specifically used to tighten bolts and nuts to a specific torque and has no application in cutting. Thus, the reciprocating saw stands out as the most effective and practical tool for this carpentry task.