[quote]Many people are familiar with the work of M.C. Escher. We have all learned to appreciate the impossibilities that this master of illusion's artwork presents to the layman's eye. Many of the so-called 'impossible' drawings of M. C. Escher can be realized as actual physical objects, Prof. Gershon Elber of Technion's Faculty of Computer Science has done just this. His research team has developed a unique CAD application for designing "impossible" 3D objects, with the 3D printer in Technion's Faculty of Architecture and Town Planning The Belvedere comes to life in a 3D model. All M.C. Escher works (C) the M.C. Escher Company B.V. - Baarn - the Netherlands. Used by permission. All rights reserved. More about Prof. Elber's work [url=http://www.cs.technion.ac.il/~gershon/EscherForReal/]here[/url].[/quote] Thought some of you math nerds might appreciate this.