One thing to note is that the trolley they assembled is made of steel and assembled with machine screws and a funny stud/"nut" combination. People's experience

One thing to note is that the trolley they assembled is made of steel and assembled with machine screws and a funny stud/"nut" combination. People's experience with your typical dowel/screw/quarter-turn connector wooden furniture might not have helped them that much. However, because the trolley is pretty light (~14 kg) and its fasteners don't require much strength to screw in (vs. the larger screws in wood furniture), it might have mitigated the strength difference between men and women.