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Hosted by Creator: @Mafagrafos — Parametric Home Decor Design Contest
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Alien Jellyfish Wind SpinnerWhat started as an “impossible” sketch idea slowly evolved into a fully 3D printable kinetic sculpture designed to move more like a living creature than a traditional wind spinner. I started brainstorming unique wind spinner concepts that did not rely on the typical straight fan or turbine-style design. After exploring different ideas, I began sketching a concept built from symmetrical segments that would form a complete circle and rotate around while folding inward toward the center.After creating a rough prototype in Fusion 360 and rigging joints to preview the motion, I was instantly hooked by the movement. That was also the moment I showed the concept to a friend, who laughed and told me it would never be possible to make something like this entirely on a 3D printer.That challenge only made me want to build it even more. As the design evolved, I decided the sideways fans should have an organic, tentacle-like appearance because the motion reminded me of a jellyfish swimming through water, although with a slightly alien feel to it. Instead of using a normal front-facing fan design, this spinner uses a ring of “sideways-facing propeller” segments designed to catch wind from almost any direction. Each segment contains carefully positioned aerodynamic “cups” that help guide airflow into the structure while maintaining the flowing organic shape.One of the most difficult parts of the project was making sure the blades could properly “cup” and catch the wind throughout the entire range of motion and from all rotational positions. Nearly every blade shape and airflow surface went through repeated prototyping, redesigning, and tweaking before reaching the final result. Every mechanism and functional element in this project has undergone multiple iterations. The internal geometry of the spinner was specifically engineered for FDM printing and designed to create low-friction movement between printed parts while remaining strong and stable outdoors. The spinner is made from 14 interconnected segments, each carefully dimensioned to prevent unwanted collisions or interference while still allowing the repeating folding “swimming” motion effect during rotation. Another major challenge was developing strong print-optimized hinges and locking mechanisms that could reliably snap together, remain aligned, and survive repeated movement and outdoor wind conditions. This project required many failed prototypes and redesigns before everything finally worked together the way I imagined. Seeing the final spinner moving outdoors for the first time made all the iterations worth it.I think it is safe to say my friend was wrong. The model is fully 3D printable with no additional hardware required, and I included assembly instructions, renders, mechanism visuals, and spinning footage on the model page.If you would like to check it out, download it, or print your own version, here is the model link: Alien Jellyfish Wind Spinner I would love to see different filament colors or future variations of the concept.
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