About this 3D model

Just an 1/10 and 1/20 model of a bench I imagined for a school project and wanted to try to print (http://watsdesign.blogspot.com/2011/03/exemple-dutilisation-de-la-reprap-en.html) As a little challenge to model and to show some capabilities of the reprap, even without support. print video : http://www.youtube.com/watch?v=kP8DS1JVL_s