Models & Model Kits

Joytopiaminds Stirling Engine Model Kits, Self-Assembly Alcohol-Powered Stirling Engine Car Model for Physical Science Experiment Display Unique Moving Physics Model - Stirling engine powers actual wheel movement! Features 55mm precision-milled alloy flywheel and high-strength metal chassis for stable operation (18×12.5cm when assembled) ️ Complete DIY Assembly Experience - All metal... Joytopiaminds Stirling Engine Model Kits, Self-Assembly Alcohol-Powered Stirling Engine Car Model for Physical Science Experiment Display