Compact metal Stirling engine kit that demonstrates basic thermodynamic principles while generating a small amount of electricity. Built for handson learning, the single cylinder model is suitable as a physical experiment gift for adults and kids and for classroom or hobby use. Key benefits Teaches core physics concepts: shows how expansion and compression of gas produce motion. Handson learning: assemble, operate, and observe mechanical motion and electrical output. Durable display model: metal construction and precision parts provide stable, reliable operation and a refined appearance. Main features Single cylinder Stirling engine that converts heat into motion and can light a diode during operation. quality metal materials with a silver finish, precise part fit, and a stable, firm base. Compact size for desktop demonstration: 16.5 x 8.7 x 9.5 cm. How to use 1. Fill the included alcohol lamp to about two thirds with alcohol. 2. Light the alcohol lamp and place it under the heating cylinder. 3. Preheat for about 30 seconds, then turn the flywheel by hand to help the engine start. 4. When running, the engine drives a small generator circuit so the diode will glow. What you get 1 Stirling engine model Practical applications and scenarios Classroom demonstration: show heat engine principles and basic electricity generation in physics or STEM lessons. Science fair or project: a clear, working example of thermodynamics and mechanical motion. Hobbyist display and exploration: desktop model for experimentation, tinkering, and teaching younger learners. Notes Intended as an educational model and experimental kit for adult supervision when used by children. Operates using an alcohol lamp as the heat source and produces a small electrical output sufficient to illuminate the included diode.