This could get really expensive

I didn´t see anything suitable to your needs so far or let´s say not below 2.500 €. But if you find something than please give me a shout - I will stop tuining my I3 then...
At the moment I make as much improvements to my I3 as possible and i have to say that the prints are getting really better. What I did with my printer so far will be shown in a seperate thread soon.

One page which might help is GrabCAD, there is a lot of mechanical stuff there as well.