export curved surface from 3DS MAX to Autocad/Inventor

[valentin17]

Hello. I have a curved surface and I don't know a right way to export it.

 

If it like Editable Poly then I have a mesh in DWG. Then I set to Faceted and optimized then merge faces (to receive one face) and then convert to surface but after that I have a surface with multiple triangles. This is one way which I use, I tried many ways but I have the same results.

 

This is what I have after export from 3DS MAX (same as DWG, SAT, IGS)

 

This is what I receive from splines and loft in AUTOCAD.

[Cad64]

What version of Autocad or Inventor are you using?

[valentin17]

My friend have several versions of Autocad (2009, 2011, 2012), Inventor (2011, 2012) and 3DS MAX (9, 2012). And I think it is no problem to use trial software of other versions.

 

I have 8 Gb of RAM, then I convert big mesh objects to surface I have out of memory, long time process and finally message that object can not be converted.

[Cad64]

Why are you making this in Max and then exporting it to Autocad? Autocad 2012 has mesh modeling tools so why don't you just make it there? And I really don't know why you would want to take it into Inventor? What is this for?

[valentin17]

Designer uses 3DS MAX 9 and he never worked in CAD software.

[Cad64]

This is an Autocad question, not a Studio Max question.

I have moved this thread to the Autocad 3D section.