Saw you found a CAD model of a tank eventually but I ran across this place earlier which you might find interesting, seeing support for Autodesk AutoCAD on some of these
Just wanna say, Azealia Banks is the best **** right now!!!
I'm not your friend, son. :)
I LOLed with your Avatar !
Funny to see that South Park predicted it!
Dude your avatar is awesome
kid got gumption