Product overview This kit contains all parts and tools needed to build a working hot air Stirling engine in one box. It is a handson DIY project designed for learning about heat engines, mechanical motion, and basic thermodynamics. Main components are supplied untreated for painting and modification. Key benefits Complete kit: All components, including the required wrenches, are provided so you can start assembly right away. Fast assembly: A functional engine can be built in about 30 minutes when assembled carefully. Educational and practical: Ideal for classroom demonstrations, selfdirected learning, or hobbyist exploration of heattomotion conversion. : Main parts are untreated, allowing you to paint them or modify the small flywheel groove to experiment with energy capture and conversion efficiency. Small scale experimentation: Designed for handson tinkering and iterative improvements to mechanical performance. What is included and important notes Complete set of engine components and wrenches supplied in a single package. Some parts are very small, with diameters around 2 mm to 3 mm. Verify you are comfortable working with tiny components before . This is a DIY product that requires careful, accurate assembly. If the assembled engine does not run, contact us for a replacement and try again. Function and performance Function: Hot air Stirling engine that converts thermal differences into rotational motion. Assembly time: Approximately 30 minutes under careful, accurate assembly. Material and finish: Main parts are untreated, giving you the option to finish or coat components to your preference. Performance tuning: The kit supports modifications such as adjusting the flywheel groove or fine tuning clearances to explore conversion efficiency and mechanical behavior. Practical applications Classroom demonstration: Use in physics or engineering lessons to demonstrate thermodynamic principles and mechanical linkages. Hobbyist project: Assemble, paint, and modify the engine as a weekend build for display or experimentation. Science fair or lab experiment: Configure and test small design changes to study how geometry and friction affect motion and efficiency. Additional guidance Work on a clean, welllit surface and use appropriate tweezers or magnification if needed for tiny parts. Take care with alignment and fastening; accurate assembly affects whether the engine will run. If the engine fails to operate after careful assembly, contact us for a replacement and attempt reassembly. This kit is suited for learners and hobbyists who enjoy detailed mechanical projects and handson experimentation with small components.