The overall shape of this product is designed by gunship, and can take off, weapon rack and launcher. Rotor disturbance air cooling, and beautifulThe burning alcohol lamp provides thermal energy to expand the internal gas, and then the internal power of the gas molecules increases, which has a strong impact on the flywheelThis product is made of selected high-quality materials. The valve body is made of fine stainless steel, and the whole body is finely polished for durabilityThe machine is maintenance-free. Inject alcohol into the syringe from the smoldering port, clean the flywheel and pour out the graduated cylinder. Cleaning can be done twiceThis is a great educational toy that can be used as a classroom or laboratory experimental teaching aid to cultivate children's interest in physics and make it more intuitive and easy to understandName: Gunship Vacuum Stirling ModelModel theme elements: Resident Evil, Umbrella CompanyFuel: 95% alcohol (need to be provided by the customer)Cooling method: forced air coolingLubrication method: drip lubrication (fill 0.5ml from the flame suction port with a syringe for the specified lubricant, fill it once at startup, fill it once after 20 minutes of operation)Maintenance: No disassembly and maintenance, use a syringe to add alcohol from the flame suction port to clean the cylinder, then pour it out, clean it twice, and add lubricating oil (note; the engine can not be cleaned by the heat machine to avoid scalding by alcohol spray)Instructions1. Assemble the rotor, insert the rotor into the main shaft and tighten the top screws,2. Assemble the base foot cup3. Add alcohol, tear off the seal of the alcohol lamp, add 95% alcohol, fill the amount to 3/2 of the alcohol lamp, and cover the lamp cover.4. Use a syringe to inhale the standard lubricating oil (the white bottled liquid in the package is lubricating oil), and add 2 to 4 drops from the flame suction port (the new machine can also be filled after 2 minutes after startup)5. Light the alcohol lamp and turn the rotor clockwise to start.6 Safety precautions, this model is for people over 14 years old, and the body parts should not touch the rotor after the model is started.size: 21x10x14cmMaterial:Stainless steel+coppercolour:As ShownPackage Contents:1 x Gunship Vacuum Stirling ModelOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.