A dado blade is a specialized type of saw blade used on table saws to create wide grooves or dados in wood. It consists of multiple blades stacked together, allowing for precise cuts that are wider than a standard saw blade. This tool is particularly useful for woodworking projects that require strong joints, such as shelves or cabinets. When using a dado blade, woodworkers can adjust the width of the cut by adding or removing blades from the stack. This versatility makes it an essential tool for anyone looking to achieve clean, accurate cuts in their woodworking projects.