What is a hole saw primarily used for?

A hole saw is primarily employed to drill larger holes in materials, most commonly wood. The design of a hole saw consists of a cylindrical saw blade that is affixed to a drill, featuring teeth along the edge that cut through the material when rotated. This tool is particularly effective for making clean, circular holes and is often used in construction, electrical work, and plumbing for tasks such as creating holes for doorknobs, pipes, or wiring.

In comparison, while a hole saw can be a versatile tool, it is not the best choice for cutting thick metal or for drilling small holes, as those tasks are better suited to other types of drills and bits that are designed specifically for metalworking or precision drilling. Additionally, creating countersinks requires a different tool entirely, typically a countersink bit, which shapes the hole to allow flathead screws to sit flush with the surface. Thus, the primary function of a hole saw is indeed to drill larger holes, especially in wood.