This video shows an early prototype of an automated gate‑trimming machine designed to separate injection‑molded parts from the runner at the gate. The system uses a motor‑driven cam wheel to actuate a cutting die, with an integrated position sensor that tracks the cam’s rotation to ensure consistent timing during each trim cycle. The part tray includes positional sensors that detect when the tray is fully extended for cutting or retracted for part removal, allowing the machine to sequence operations safely and repeatably. A clear vinyl enclosure surrounds the mechanism, protecting the system from dust and debris while also serving as a physical barrier between the moving components and the operator. This prototype was fully functional and operated close to production acceptance levels, though it was not yet fully validated for final manufacturing use. It represents an initial design iteration focused on demonstrating the trimming concept, motion control, and safety features.