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Hidden within countless machines, from electric cars to robotic arms, moves a delightful mechanism within engineering: the planetary gear train, also known as epicyclic gearing. Planetary gears are compact, powerful, efficient, and versatile. Their ability to provide high torque in a small space while allowing multiple speed and direction outputs makes them indispensable in modern mechanical engineering.
Our Planetary Gears Necklace brings mechanical brilliance to life with real working gears that actually spin! Crafted with extreme precision, the pendant features a fully functional miniature gear system, complete with a central “sun” gear and three orbiting “planet” gears, just like real-world planetary gear systems. With a gentle turn, the gears engage and rotate smoothly—transforming mechanical motion into wearable art.
The polished silver steel and gold plated steel pendants measure 1 inch in diameter and are available on a variety of chains and leather cords. Durable and lightweight for everyday wear, this necklace is also stylistically versatile enough to span t-shirts to prom dresses and everything in between. As an extra bonus, the pendant doubles as a satisfying kinetic fidget.
Like all of our jewelry, this necklace comes ready for gifting in a hand-stamped gift box (or black velvet bag for international orders) along with a little card explaining the meaning of the design.
Perfect for:
** FUNDRAISER!! **
$20 from each necklace sold between Nov 13 and Nov 17 will be donated to the South Eugene Robotics Team (SERT 2521), up to $1,000.
Our studio collaborated with current and former members of this high school robotics team to design the Planetary Gears Necklace. They took our sketches and turned them into a working CAD model, then helped us perfect all the details.
We love supporting great educational causes! As a FIRST Robotics Competition team, SERT prepares high school students to be future leaders in innovation. These hardworking students are making the world better.
Please share this page with anyone you think might be interested! Help us reach our fundraising goal!