Google Sketchup comes with a scriptable interface and can export to STL files. I don't know if it would be easier to generate the STL files directly. http://www.cerebralmeltdown.com/cncstuff/stl/index.htm http://www.youtube.com/watch?v=FALvwBN5-hc -- Mike Stay - metaweta@gmail.com http://www.cs.auckland.ac.nz/~mike http://reperiendi.wordpress.com