One very frustrating thing about IKEA is how varied things are. For all their love of flat-packed unified systems, their furniture’s all made by different designers, often with very different ideas of what’s reasonable assembly. My housemates recently bought a new wardrobe and a set of couches from IKEA; the wardrobe took around four hours to assemble, with a billion tiny screws of different sizes, types, and materials, and still came out all crooked.
Each section of the couch was four pieces. It took maybe five minutes.