Open-Sourced by a 15-Year-Old: 3D-Printed Cycloidal Gearbox for Nema 17
philfung · x · 2026-08-03
A 15-year-old developer has designed and open-sourced a 3D-printed cycloidal gearbox tailored for Nema 17 stepper motors.
To account for 3D printing tolerances, the gearbox was designed slightly larger (3.5 inches), but practical verification confirms it works effectively. The project is fully open-source on GitHub, providing robotics enthusiasts with a low-cost, DIY alternative for gearboxes.
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