In the past few years, we have covered plenty of amazing chaotic pendulums here. This Double Ring Pendulum Kinetic Sculpture is also worth a look. It has a freestanding design. It has stainless steel and 3D printed components. The rings are made with carbon fiber reinforced PLA plastic.
More gadgets like this: here
These can run from 20 seconds to a minute. They make random movement, so they don’t get boring fast. According to the maker, the newer versions of this come with a wooden pole. MilieuTechDeco is selling this on Etsy.
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