After five failed attempts and setting the project aside for a few days, I succeeded in making a folding 3D printed rhombic dodecahedron. It takes significant pressure to snap together (video speeded up), so the design needs more work, but it's nice to see that it's possible.
Nailed it! This video shows the latest version folding easily in real time. You can hear my Prusa Mini+ in the background printing the next one! The print files are at Printables.com here: https://www.printables.com/model/217716-snap-together-folding-rhombic-dodecahedron
@axwax PETG. I think it would work with PLA, but I've been experimenting with folding 3D prints and found that PETG holds up well to repeated bending, while PLA will break after a short while.
@geekmomprojects That makes sense - I was wondering how PLA would cope with those fragile looking folds. I'm still amazed what's possible though!
@Wraptile Of course. This method allows you to easily enclose objects inside the polyhedron (e.g. LEDs) and you could have a different color exterior/interior with a single filament swap.
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