The twenty wooden rods come in five groups of four identical ones. The rods have a width of 27 mm and a thickness of 24 mm, except at regular intervals of 10 cm where the thickness is only 12 mm. The width of the thin part is 27 mm so that another rod fits if it is perpendicular. The connections between two rods that cross is basically the same as the logging cabin principle of stacking the beams. The shortest four rods have two thin parts, the next group of four has three thin parts, and similarly there are four rods each with four, five, and six thin parts. The background panel is 150 cm by 150 cm and has nine protrusions which support the intersections of two rods.
Last modified: Marc van Kreveld, November 28, 2002