It's the holiday seasons and I decided to build a Tensegrity Hourglass Tower model as a holiday project.
Possibly the first in the world. The inverted tripod at the top is "floating" and only attached by twine. Tautline hitch is used to adjust the tension on the 3 sides.
The vibration is due to the relatively low tension. Stable platform can be achieved with higher tension using stronger materials, e.g. titanium rods, wire rope, tensioners.