In this video

If your staircase has one or both ends exposed (not enclosed by a wall), you'll need to consider how to finish the 'return' of the stair. This often involves mitering the stair nose and adding a separate piece to create a finished side. For stairs with dramatic radius curves or floating steps (which lack risers and have all four sides visible), standard pre-made options may not be suitable. In such cases, custom-made solid wood pieces, shaped to fit the unique contours of your staircase, may be necessary. This significantly increases the complexity and cost of the project.