Hi all! Didn’t have a proper computer for the whole weekend, so sorry for the late reply! 
I threw together an extremely simple 3D project, it includes;
- gameobject with a model component using a collada file
- material for 3D, attached to the model component
- render_script that only renders the 3D-tags/-predicates
I added some simple input handling to the gameobject as well.
Hope this helps to get things started! 