A.T.C on Instagram: "A recent engineering graduate from Olin College @herotech.engineering, in Massachusetts has built a real working lightsaber prototype with a retractable illuminated blade powered by high intensity LEDs, compact motors, and a precisely guided internal extension system. The design uses a flexible LED strip pushed beyond standard voltage inside a custom telescoping mechanism that extends and retracts smoothly from the hilt, giving the glowing blade structure and stability witho