Handmade Metal External Combustion Engine Model Key benefits Handson learning tool: Demonstrates the basic principles of external combustion engines in a compact, visible format. Ideal for students, hobbyists, and anyone curious about mechanical systems. Decorative and functional: Carefully crafted metal construction and a visually appealing design make this model a striking desktop decoration that also operates as a working demonstration device. Durable and stable: Solid metal build and a wellengineered structure provide reliable, repeatable operation for demonstrations and display. Features Material: Metal, handcrafted for visual texture and fine detail. Operation principle: A vacuum motor uses the flywheel inertia to drive the piston, reducing pressure in the cylinder and producing motion. Fuel and start method: Uses a small alcohol lamp. Start by turning the steering wheel with a cotton swab dipped in alcohol until the mechanism begins to run. No water required. Preheating: Engine typically preheats in about 1 minute. Note that attached generator preheating may take slightly longer. Size and color: See product images for exact size and color details. Practical applications and scenarios Classroom demonstration: Use in physics or engineering lessons to show how external combustion engines work and to illustrate basic thermodynamic and mechanical principles. Office or study display: Place on a desk or shelf as a conversation piece that doubles as an educational model. Hobbyist demonstration or workshop use: Suitable for model engineering events, hobby displays, or handson demonstrations at maker gatherings. Simple operating steps 1. Rotate the flywheel by hand to confirm smooth movement. 2. Ensure sliding parts are clean and of debris. 3. Fill the alcohol lamp to less than two thirds capacity using 95 percent or higher alcohol. 4. Light the alcohol lamp at the front end of the test tube. 5. After about one minute of preheating, turn the steering wheel; the engine should begin to run. Performance notes No water is required for operation. The mechanism is designed for repeated demonstrations and display use. The model provides a clear visual and mechanical demonstration of external combustion engine behavior. Package contents Engine model x 1 Alcohol bottle x 1 Only the listed items are included. Ordering guidance Check the images for color and size details to ensure compatibility with your intended display space or teaching setup.