This is my Gaplan Edge 540. True 3D capable plane.
https://www.youtube.com/watch?v=Xq1teQKXgh8&t=91s
https://www.youtube.com/watch?v=f9WrieMx49k&t=2s
Files are available here:
https://github.com/jackheli/Gaplan
Discussion and assembly instructions here:
https://www.rcgroups.com/forums/showthread.php?4033079-The-Gaplan-Edge-540-First-trully-3D-capable-3D-printed-plane
The author hasn't provided the model origin yet.