How to Build a Columned Room Divider

We ripped 1½-inch strips from leftover ¾-inch MDF, but you could also use 1x2 trim. Either way, measure and cut the front and back stiles to length. If necessary, scribe and trim the wall-side stiles to follow the wall's contour. For the outside stiles, use a scrap of ¾-inch MDF to stand in for the abutting stile to be installed in the next step, as shown. Glue and nail the stiles in place; they should end up flush with the inside edges of the shelves on the front.