I have the opportunity to have some projects printed with a 3D printer. The only problem is that his software that he uses will not read any format AC (ArchiCAD) can save to. He can read dxf, dxg files if there is 3D info. Is there a format that I can save from AC that will keep all of the 3D elements? He is not able to read an ifc format. I have tried saving the project in AC and open it in Autodesk, but every thing is flat. Thanks for the help.
