How do I convert from cad to stl?

I'm pretty sure the title explains it.

2 Answers

First set an higher stl output resolution command: "_FACETRES", give "10"
Then start export command: "_STLOUT", select the solid, say "Y" to binary and give a file name.

If you don't have any CAD software, you can find converters to do that : CrossManager can convert many CAD formats to STL: http://www.datakit.com/en/cross_manager.php