Yenn, Thoki (Kalmon)
created by Thoki Yenn (Kalmon)
Paper: 6 sheets of kami, 17 cm by 6 cm
Model: length/width/height of 8.5 cm
This model is sometimes also called "magic rings" or "impossible rectangle". You could also call it "Borromean Rings": three rings linked in a way that by removing any one ring the other two aren't linked anymore, either.