Updated Model: https://skfb.ly/KvXC
Pivot Point: Thanks @stephomi I will try that next time. Just couldn't find it in the help/tutorial section so it's good to know and try it out, especially if I want to feature something off-center. That would especially be useful to those who make people, to center it near the neck rather than the groin area
Texture Scaling: ArchiCAD works very differently than most 3D programs, I will have to start converting my library to 2048 x 2048. In the above model I resolved the texture issue by cropping my texture down.
Tutorial: (below) I think this is pretty thorough tutorial for ArchiCAD users. Hope it helps, my little thank you for such a great program.
In ArchiCAD (using AC17):
Go to your 3D-Model view window and show your entire model you want to export. The viewpoint I use is an aerial perspective… I doubt the viewpoint matters when exporting the model.
Command-Option-S (File Menu > SaveAs) (Mac OS);
In the Save 3D window at the bottom left, click ‘New Folder’ and name it as you like; then,
Select Format > Wavefront File and name your file (your_title.obj)
This will open a new dialogue box called: ‘Save Wavefront Document’
Check off ‘Model rotated’, and I use ‘Elements - Surfaces’
Set drawing unit to ‘1.000 inches’ (after experimenting with units, between 0.001 to 50,000 inches, I don’t think it has any impact on what is imported to SketchFab with regards to background or textures scale).
This will take just a few short seconds to save 3 components into your computer's folder: 3D-MODEL_Textures; 3D-MODEL.mtl and 3D-MODEL.obj.
When the processing from ArchiCAD is done:
Go to your finder and right click on the folder you made, and select ‘compress’ (Mac OS) to turn the folder into a Zip file; Don’t compress the individual files, just the folder that holds the files.
This will create a file named ‘your_title.zip’ which is what you will upload to your SketchFab profile (top right corner is the Upload button).
In SketchFab (via browser):
When uploading, you may get a message “There might be issues if you upload. Press continue to upload anyway” Click Upload. These ‘issues’ may have to do with textures that didn’t load, or weren’t assigned to an object (that you had the layer turned off and thus didn’t import). You can reassign textures, even upload new one’s from inside SketchFab.
Orientation: Your model may be imported in the wrong orientation which is easy to fix, just click ‘Edit 3D Settings’ inside SketchFab and in the edit window on the left > Straighten Model click on the ‘x’ arrow to rotate, and 'Save View, then Save Settings'.
Pivot Point: Double click on the part of the model you want as the pivot, click 'Save Settings'.
Background: Because the ArchiCAD model imports always seems tiny next to the default backgrounds I use a blank background. Go to ‘Edit 3D Settings’ > Lighting > turn off ‘Environment’ and turn on ‘Lights’.
When ready click on ‘Publish’.