I absolutely hated that the bottom of the case was not covered by any light because of the GPU.
I used some MagFlex Lite because I
Those strips and splitter
Some double sticky tape (I used that one, it may be the only use it has otherwise it's pretty bad…)
I used 10% infill, tried 0 but it caused other issues.
I had to split the long part in half though it may fit on a 30x30cm bed and you can even print the full on a 40x40 bed.
Led heat don't seems to be an issue with 3 walls and 10% infill.
Orientation should be done according to the effect you want to “see”, I oriented mine ledside down as I use some “galaxy” filament that hide the layers even the biggest ones but using a PEO/textured sheet might give some good effects through the glass.
The author marked this model as their own original creation.