One of the things I had tonnes of trouble with early on with my Solidoodle 2 3D printer was actually taking a 3D file (.stl) through from creation to printing on the 3D printer. Made this video a long time ago to help others with the task. New vid is in the pipeline for production
http://www.youtube.com/watch?v=b-PVl5lU ... 75cAQTX43-