Miniature Alcohol Engine Model with Glass Cylinder and LED Overview This desktop engine model demonstrates a working alcoholpowered piston engine with visible motion and an integrated LED light. Built from zinc alloy and stainless steel with a glass cylinder and an oak wooden base, the unit is designed for stable, quiet operation and handson observation. Key benefits Visible operation: Transparent glass tube and alcohol lamp let you watch piston movement in real time, making the model ideal for demonstrations and study. Selfpowered LED: The engine can drive the included LED bead; rated output voltage is 3.0 to 5.0 V for simple lighting or lowpower experiments. Durable construction: Zinc alloy and stainless steel components deliver longevity and mechanical detail. The oak wooden base includes antiskid pads for stable display. Compact and portable: Measures approximately 17 x 8.5 cm and weighs about 350 g (engine plus wooden base), making it suitable for desktop display or classroom use. Low operating cost: Runs on 95 percent alcohol fuel. A small alcohol bottle and a 3 ml dropper are included for controlled refueling. Specifications Size: Approx. 17 x 8.5 cm / 6.7 x 3.3 in Weight: Approx. 350 g (engine plus wooden base) Materials: Zinc alloy, stainless steel, glass, oak wooden base Output voltage: 3.0 to 5.0 V Fuel: 95 percent alcohol Color options: Silver, Gold, Silver with red trim, Gold with red trim Package contents 1 x Engine model 1 x Alcohol lamp bottle 1 x Alcohol dropper (3 ml) 1 x Spare heating glass tube 1 x LED bead 1 x English instruction manual Use scenarios Classroom demonstration: Show thermodynamics and mechanical motion in physics or STEM lessons by letting students observe piston cycles and measure LED output. Hobby display: Place on a desk or shelf as a functional model that runs quietly and provides a practical conversation piece. Handson experiment: Use the included dropper and spare glass tube to explore fuel management, heat transfer, and simple generator behavior in smallgroup experiments. Operation notes Fuel with small amounts of 95 percent alcohol using the supplied dropper. The glass heating tube and transparent cylinder allow safe observation of piston movement; follow the included English manual for setup and recommended operating procedures. This engine model combines visible mechanics, a selfpowered LED, and quality materials to provide a compact educational and display piece for students, teachers, and hobbyists.