Umulius Rectangulum (Thoki Yenn): Instructions

Adams, Sara
Difficulty Level: 
Low intermediate
Model type: 
6 units
Paper ratio: 
Non-square Rectangle

Origami Tutorial: Impossible Rectangle "Umulius Rectangulum" aka Magic Rings (Thoki Yenn)

Paper used in this video: 6 sheets, 17 cm by 6 cm
Finished model: width of 8.5 cm
Alternatively use:
* A4 cut in half lengthwise
* 6 in by 2 1/8 in (model width: 3 in)
* any rectangle with a ratio of 1 by square root of 2 (approx. 2.8284)

This video describes how to fold a fantastic modular origami model designed by Thoki Yenn (aka Kalmon). It's known as the magic rings, impossible rectangle, Umulius Rectangle or even "Borromean Rings": three rings linked in a way that by removing any one ring the other two aren't linked anymore, either.

Thomas S√łndergard, son of the late Thoki Yenn, kindly gave me permission to make this video accessible to you.

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