Hi. I am importing STEP files to Rhino. Read them perfect. Then I am exporting them to DWG.
After that I used the Autocad Viewer and I can see them perfectly.
I am wondering why Sketchup isnt showing me the whole model.
If someone is familiarized with these tipe of procedures I will really appreciate your tips.
You could try saving a SketchUp file directly from Rhino (Rhino 5 imports and exports SketchUp v.8 files) and let Rhino do the conversion from solid to face geometry. If you need more control, you can convert the surfaces to meshes, and, perhaps, even use the mesh reducer command in Rhino before exporting. The same goes if you want to go via the DWG route, too.
I too like SimLab things, but the OP has Rhino. Rhino can import and export almost every imaginable 3D format plus some I had never heard of. I would guess that he has no need for some other exporter/ importer.
people trying to import STEP files to SU but either without a Rhino license or with the need to avoid erroneous and time consuming multiple format conversions (see above) might benefit from an alternative solution as the STEP importer directly running inside SU anyhow.
Here is a SketchUp file of the file straight from Rhino. SU_Help.skp (2.0 MB)
It would probably benefit from pre-export cleanup in Rhino and it has unnecessary geometry (like tubes with wall thickness).