Mini4wd portable dimension box

A friend has requested a scrutineering box for his mini4wd cars that can be dissassembled and stowed away when not in use to save space. I have made this into a 5-panel box that can be assembled without tools, using dovetail joints to secure the edges.

As per the official current Tamiya regulations, inside dimensions would be 105x165x70mm, and the entry car should fit inside this box when placed on a flat surface and the box covers over the car. So as for making this you have to make sure your printer is calibrated as precise as possible.