Metal Stirling Engine Model Kit Hot Air Stirling Helicopter Model DIY Assembly Stem Engine Christmas Desk Decor & Gift for Adults

Unique Helicopter Design Powered by Stirling Engine: This innovative Helicopter Stirling Engine combines aviation aesthetics with Stirling Engine technology, creating a captivating display where the rotor blades spin realistically when heated by the included alcohol lamp Simple Operation Process: To operate the Helicopter Stirling Engine, simply inject 95% alcohol into the lamp, light it beneath the heating cylinder, preheat for 30-60 seconds, then manually start the flywheel to initiate continuous rotor blade operation Comprehensive DIY Assembly Kit: With hundreds of precision parts included, this Helicopter Stirling Engine offers an engaging building experience following detailed illustrated instructions Precision CNC Manufacturing: The Helicopter Stirling Engine features components modeled by CAD and manufactured by CNC technology, using durable aluminium and stainless steel materials Gift: This Helicopter Stirling Engine serves as an excellent Christmas or birthday gift for adults and engineering enthusiasts., Manufacturer: Engineerkiter