I wasn’t sure what the article meant by “no screws or glue”, when the photograph appears to have visible screws. But closer images show that these are apparently some sort of rivet?
I found a (Japanese-language-only) news piece that shows some of the crafting and assembly of the satellite, and the box body certainly holds together by itself, via some beautifully intricate joinery:
I found a (Japanese-language-only) news piece that shows some of the crafting and assembly of the satellite, and the box body certainly holds together by itself, via some beautifully intricate joinery:
https://www.youtube.com/watch?v=A_F-NzzC7RA