Story URL: http://news.medill.northwestern.edu/chicago/news.aspx?id=179252
Story Retrieval Date: 6/20/2013 1:10:12 AM CST

Lauren Biron/MEDILL
Violet Berlin and Savi Smith, both age 7, tower over a model of downtown Chicago, on display at the Chicago Architecture Foundation. The stereolithography model uses a technique where a computer prints imagery in three dimensions by layering liquid resin that is hardened by lasers.