And if we talk about third-party programs, that is, that's an interesting - Onshare.

http://www.youtube.com/watch?v=voEtTcWuHG8

It perfectly realized modeling techniques, of which I spoke.
But it oznachat you need to get away from MOI3D and learn other software and it design your work. The point?

PS. By the way, just such wonderful callouts with dimensions as shown in the video above, it is not enough to MOI3D. Alas.