Stirling engine model designed for handson learning and display. Precisionmachined stainless steel parts and aluminum alloy cylinders deliver durable, smooth operation while a quartz heating tube provides longrunning performance. This readytorun DIY model demonstrates heattomechanicaltoelectric conversion using a small alcohol lamp. Key benefits Durable construction: stainless steel frame and finely ground aluminum alloy cylinder and piston for hardness and long life. Reliable heat source: quartz heating tube designed to handle continuous speed operation with minimal wear. Clear learning value: visible moving parts and simple working principle make it ideal for physics demonstrations and practical learning. Skill development: assembly and operation require patience and coordination, helping to build mechanical and problemsolving skills. Ready to run: lamp mounts on a fixed metal base for a stable setup; turn the flywheel to assist startup. Features Function: Stirling engine model that converts heat from an alcohol lamp into mechanical motion and electrical output; spinning propeller demonstrates energy conversion. Materials: stainless steel frame and components, aluminum alloy cylinder and piston with finesurface treatment. Size: 160 mm x 87 mm x 100 mm (6.3 in x 3.42 in x 3.93 in). Package includes: 1 Stirling engine. Recommended age: suitable for ages over 12 with adult supervision. Notes on operation: alcohol fuel must be provided by the user. Use 95% alcohol only. Do not add water or any other fuel. Do not use kerosene, petroleum, candles, or similar fuels. Burn for about 2 minutes before attempting to start. Turn the wheel to help start. Practical use scenarios Classroom demonstration: show thermodynamic principles and heatdriven mechanical motion in a physics lesson, making abstract concepts tangible. Hobbyist project: assemble and run the model as a handson engineering exercise or tabletop display that illustrates real mechanical linkage and heat engines. Educational gift: an engaging present for teenagers or STEM learners that encourages curiosity, manual skill, and understanding of energy conversion. Additional information Alcohol is not included and must be prepared separately. Installation requires patience and careful assembly; follow the operation notes for results. Allow 1 to 3 cm tolerance for manual measurement. Actual item color may vary slightly from images due to display differences.