"There are numerous names for this "narrow cupboard" but that is not one of them. Better results using half-moon cabinet, chinosere, demiluna, bombe'. Use as plant stand, candle stand, telephone/reading table. I would guess yours…"
You need to obtain "side button" rails. They come in cast iron or steel. Might find some on wood, or round rails too. The side button slips into the slot on your foot/head board. It forms a platform for wood slats that…"