At the same time I got the smaller box light cut I also got a version of the self supporting light cut. The images show the design with LED tape inside. This size of design uses 75cm of tape.
Issues with this design include the size of the supporting hinges, they are not wide enough for the thickness of the material, and also need to be a little more flexible. These hinges will be shorter in the final design, I needed them to be longer for this design to determine where they need to be. The flexibility of the large middle hinge is good, so the only change here will be to put in a semi circle to aid the lifting of the hinge.
The next plan for this design is to create a larger version.