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DjuiinoStar Mini Hot Air Stirling Engine A High Performance Pocket-Sized Working Model
★EASY OPERATION it's ready to run. All you have to do is to take it out of the box and fill the lamp with 95% alcohol to heat the glass cylinder; then, after warming up for seconds, give the flywheel a spin and it will rotate rapidly and smoothly; besides, you can also assemble the free DIY set onto the flywheel to get the fan rotating. Just within 5 minutes, people around the machine will be surprised and wonder how it works. A great desktop toy, TONS OF FUN! ★WIDE APPLICATIONS it's a vivid model displaying basic principle of external combustion engines. People bought it for kids' science project, physics/mechanics

Price is $46.00
Price: $45.99