Tribands
This is a Triband:
It is a trio of Borromian Rings, made of actual elastic
bands. I had to cut the red hairband, weave it through the others, and re-glue
it, for otherwise the linkage is topologically impossible.
Though all three are linked, no two are joined. Any two can
be pulled apart, like this:
Or this:
Or this:
If you pull apart red and blue bands, wrap the red band
around a bundle of pens, poke the blue band through the end of the red band, and
pull the blue band through, then after a bump the triband forms this “bunny
bundle”:
It’s a way to elastically bind together pens, or cables, or hair, without going the long way around.
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