A thin rip jig is a device used on a table saw to make narrow rip cuts. A rip cut is when you cut a board lengthwise along the grain. A thin rip jig is useful when you need to make a narrow rip cut, such as when you need to create a thin strip of wood for a project. Install the thin rip jig: Install the thin rip jig on the table saw using the instructions provided with the jig.