Which saw features a one-piece blade that operates in one direction around guides?

The correct answer is the band saw, which is characterized by its one-piece blade that moves continuously in one direction around wheels or guides. This design allows the band saw to cut intricate shapes and curves with accuracy, making it ideal for various woodworking and metalworking applications.

The band saw's unique operation is facilitated by its teeth aligned along the blade, which runs over two wheels. As the blade is driven by a motor, it moves continuously, enabling smoother cuts than those made by saws that operate with a back-and-forth motion, like the reciprocating saw. The band saw is particularly effective for cutting materials of various thicknesses and allows for straight and curved cuts, which can be challenging with other types of saws.

In contrast, a reciprocating saw moves the blade back and forth, making it better suited for demolition work and cutting through materials like drywall and plumbing. Other options like the miter saw and table saw perform different functions, focusing more on straight and angular cuts in materials.