Zig-zag chair, Gerrit Thomas Rietveld, c. 1936
From the 1920s the architect Gerrit Rietveld experimented with industrial semimanufactures that were not really intended for making furniture. For example, he used materials such as fibre, aluminium, and glass. He had this Zig-zag chair, intended for personal use, produced from such an unconventional product. The entire chair was sawed from a standard-sized cabinet shelf from the Bruynzeel firm.