• Rietveld always wanted to design a chair that would be industrially produced and that would be cheap to transport. His design for the HOPMI chair in 1932 came very close. The chair is made up of a frame with six curved piping elements that are connected with a torpedo nut. The torpedo nut was a patent of the Dutch Patent Metal Industry (HOPMI) in Utrecht. Only two of these chairs were ever produced at the time and their existence was generally unknown until recently. The architect Victor Veldhuijzen van Zanten brought the chair back to life in 2013 by putting it back into production. The HOPMI chair is sold in an easy DIY kit along with the necessary tools. € 650,- Order