What is IGES?
IGES(Aijes) is differentCADOne of the intermediate file formats used when exchanging data betweenANSIhas been developed by the company, and has practically become a global standard, especially in the automobile industry. It is often used when dealing with 3D data. Abbreviation for Initial Graphics Exchange Specification. (Wiki quote)
Get the Addon for free below
https://www.digital-sculptors.com/cms/index.php/software/blender-plugins/63-export-iges.html
test content
I output IGES from Blender using the above Addon and imported it with Rhinoceros.
test results
nGoncannot convert polygons created with(missing faces).
It becomes a beautiful surface model, but each face is divided.
In the rendering (Cycles on Rhinoceros) no split lines are seen.
The shading is very nice, but I found it difficult to edit further on Rhinoceros.
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