About this 3D model

Customizable Delta vase inspired by http://www.thingiverse.com/thing:150482 from the original design by Mart van Schijndel Generalised to N Sided Vase although rendering is slow for large N - NSides=20 took 30 minutes. Repetier Host called the STL non-manifold but Slic3r appeared to work. I'd be interested to know if it prints. The current OpenSCAD code trims the bottom to assist printing. More in my blog http://kitwallace.tumblr.com/post/93760445604/delta-vase