Hello!

Thanks for the quick feedback, I will forward my drawings this way.
Thanks Pilou, with PconPlanner I could also convert OBJ to DWG very easily.
I could even assign material well (PCon) without dissolving the groups.
Simlab also works well with OBJ and can also give DWG output.

Unfortunately, I cannot try Autocad and Archicad in my home, but the decisive factor is a small file size with maximum quality.
I had the feedback of a designer who uses VektorWorks, he had problems with the material assignment because he could not resolve the parts.
He will continue to try ...

I have already done object naming and color assignment in Moi.
With OBJ, these things are still there despite the export, that's the beauty of the format.

In the next days I get a feedback if the designer has achieved something in VektorWorks. He want to share the drawings with this programm (a customer from me).
But I think that the VW files are getting much too big anyway.

With kind regards
Franz