You can see the build video here:
This is not a 100% 3D printable design, but most of the major elements (the corners and edge bumpers) are. Definitely a lot of room for improvement, but I'm happy with V1 for now. I already have a lot of ideas how to simplify assembly and reduce the part count. I'll likely be making a V2 that can easily be reconfigured as a Weighted Storage Cube and I'll definitely need to design a full-size 1500 MW Aperture Science Heavy-Duty Super Colliding Super Button.
The author hasn't provided the model origin yet.