Download Free 3-d Software from PTC
 

I posted in Battlebots forum about a program that has very impressive abilities and it is also free. It is the software that PTC gives out to many of the teams creating battlebots

available here

www.ptc.com

its called Pro Desktop Express a slightly numbed version of Pre/Desktop which is not free

Yeah, I downloaded it last night. It's pretty powerful for free software, although I think i like the Inventor interface better.