• Aluminum Alloy Plastic Stainless Steel
• Premium Materials & Craftsmanship – This mini handcrafted cup lid heat engine is built with high-quality aluminum alloy and stainless steel for durability, while the finely polished surface ensures a sleek, rust-resistant finish. The transparent glass cylinder enhances both mechanical performance and visual appeal
• Low-Temperature Differential Drive – Operating on the classic Stirling engine principle, this model runs solely on the heat from a cup of coffee or hot water (no electricity needed). A perfect low-temperature Stirling engine model for scientific experiments and demonstrations
• Creative & Quiet Desktop Decor – Designed as a stylish cup lid heat engine, it sits directly on your mug and starts running silently with warmth. Its lightweight, transparent design makes it a mesmerizing conversation piece for offices, studies, and living rooms
• Educational Science Tool – An ideal physics teaching aid for students and teachers, this engine demonstrates energy conversion and thermodynamics in action. Great for classroom experiments, STEM projects, and hands-on learning
• Perfect Gift for Tech Enthusiasts – Packaged in an elegant gift box, this exquisitely crafted Stirling engine makes a great gift for mechanical model hobbyists, science lovers, and curious minds. Whether for display, collection, or interactive learning, it’s a unique and affordable present