Changes
openscad
* http://wiki.ultimaker.com/Newcomer_guide_to_your_first_3D_print
* 3D Software:
** [http://openscad.org OpenSCAD] is a script-based 3D editor. it can make use of parameters, conditions, for and while loops, etc... This is currently Petaflot's choice
** http://www.3dtin.com/ Online in the browser
** http://www.netfabb.com/download.php (Linux version)
