Category Archives: stone carving

Michelangelo’s David has weak ankles.  They are full of micro-fissures. David (1504)  5.17 meters (17 feet) ; in the Galleria dell’Accademia, Florence  (photo by Rico Heil, licensed under Creative Commons Attribution-Share Alike 3.0 Unported) And now if they build a high-speed … Continue reading →