It's quite brilliant, Dennis. I like that you've used five-fold symmetry for the connecting struts, much more interesting than the more obvious four. I've been musing on circles and spirals and orbits lately and I love this interpretation. My only quibble - and this is a very personal foible of mine - is that the attachment rings for the chain look a little like ears. Listening for the music of the spheres, perhaps?
The slider is ingenious, so much cleaner than an adjustment chain.
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