"You can't push on a string"

I think this single string tensegrity structure is even more awe inspiring
when he briefly holds it as a cantilever before standing it up right.
If you skip to the second half of the video he shows how to use a block of
wood to assemble the structure more quickly.
https://www.youtube.com/watch?v=Ds-scY9qESE

Another builder made a taller and heavier single string tensegrity tower as
well as a single string table.
https://www.youtube.com/watch?v=8sUjpkmisBs

Some history.
The Latvian-Soviet artist/sculptor/engineer Karlis Johansons exhibited his
first "self-tensile constructions" in 1921. The engineering and sculptural
possibilities of such pre-tensioned systems were further explored by
Buckminster Fuller and the sculptor Kenneth Snelson in the second half of
the 20th century. (eg. see Snelson's "Needle Tower") The word tensegrity
(tensile + integrity) coined by Fuller is now the common name for such
structures. I have noticed that the first tensegrity structures focused on
the use of straight struts, but now people are starting to explore the
possibilities of using curved struts.

Harry

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