Cardboard engineers at work. The frame in the background is designed for displaying perfume.

Each of the graceful shapes above is made from a flat sheet of cardboard, no paste or attachments being used. At the right "radial folding" produces raised letters with one easy motion.

Working WondersCardboard engineers

COULD you fold a flat piece of cardboard, one twenty-fifth of an inch thick, so that it would support two 150-pound men? It sounds impossible, but by one of the methods developed by a Long Island City, N.Y., group of cardboard engineers, the trick is accomplished with ease. Led by Richard E. Paige, the experimenters have invented six different methods for folding flat cardboard into strong three - dimensional forms. Their discoveries have already brought about great changes in the million-dollar advertising-display industry, and are making valuable contributions to engineering practice by demonstrating the use of light, inexpensive materials that are strong because of their form rather than their bulk. Previously, cardboard had a limited range of usefulness, since it could not be folded into smooth curves, angles, and raised planes. Now, however, by geometric designing methods, a wide variety of three-dimensional forms like those at the left are easily produced.

Cardboard Pistol Gives Realistic Machine-Gun Sound Effect

Cardboard Pistol