I have downloaded a few impressive models, but they are unconstrained and would take forever to do it myself, is there something I am doing wrong?
I am using Inventor 2012 btw
Totally agree with William (Nice Profile Pic By the way!)
Also, I would sugest to keep everything grounded and create only constrains that are necessary...
For example if you want to create a drive constraint....
Otherwise I cannot see why to rebuilt the whole assembly if every part is already in the right position