How to export STEP files with layers?



my client need a STEP file from a current Rhino 5 (64) project, but if I export the Rhino scene as STEP and reopen it per Rhino, than all layers are missing. What did I wrong?


(Chuck Welsh) #2

Hi Micha,

Make sure you export using AP214. AP203 does not support layers.

Chuck Welsh
Robert McNeel and Associates


This helps to get layers. Is there a way to get the old tree structure of the original 3dm? Or is it dependent from the 3D software that is used for opening the STEP file? If yes, could Rhino do it too?

At the moment the STEP layer naming is like this “Solids::Info::Infofenster”. At the orginal “Infofenster” was a sublayer of “Info” was a sublayer of “Solids”.


(Chuck Welsh) #4

As far as I can tell, there is no way to represent sublayers in a STEP file. The STEP format is extremely large and complicated, though, and I don’t pretend to understand it all. If you have an example of a STEP file that does contain nested layers, or at least that some other program creates nested layers when reading it, please send it to me,, and I’ll see what I can do.

Chuck Welsh
Robert McNeel and Associates