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Could you please advise on how to take a 3d model file from autocad into ecotec.
We used to use the 3ds file format for this. However, it seems that since 2008 3dsout is not longer available in autocad.
This says DXF works http://greendwell.wordpress.com/2009/10/07/ecotect-file-import-tips/
Otheriwse you need ACIS format files: do you know what format they support?