Mini Reciprocating Double-Acting Steam Engine Model, Retro Brass Mechanical Engine Kit Without Boiler, Desktop Steam Power Model for STEM Education and Physics Demonstration

This mini reciprocating double-acting steam engine model is a mechanical device designed to demonstrate how steam energy is converted into mechanical motion. Unlike single-acting engines, this model allows steam to act on both sides of the piston, resulting in a more continuous and balanced movement. Constructed primarily from brass and manufactured with CNC machining, the model features a compact structure with a smooth finish and precise detailing. Wear-resistant materials are used in key moving parts to support stable operation and repeated use. Before operation, lubricating oil should be applied to friction points such as the piston and crankshaft. Steam must be supplied from an external boiler (not included). Once sufficient steam pressure is generated, the flywheel can be gently turned to initiate motion. If the engine does not run smoothly, users may need to check steam pressure, lubrication, or alignment of moving components. This model is suitable for hands-on learning, allowing users to observe the working process of a steam engine more directly. It can be used as a teaching aid for basic physics and engineering concepts or as a mechanical display for hobbyists and collectors. Please note that a compatible boiler is required for operation. Always follow safe handling practices when working with heated components and steam.

• 【Double-Acting Steam Engine Design】This reciprocating steam engine model uses a double-acting structure, allowing steam to act on both sides of the piston for continuous mechanical motion demonstration
• 【Precision Metal Construction】Mainly made of brass with CNC machining, featuring a smooth surface and detailed structure; key components use wear-resistant materials to support stable long-term operation
• 【Hands-On Mechanical Model】Designed for manual operation and observation, helping users understand how steam energy is converted into mechanical work through visible moving parts
• 【Requires External Boiler】This product does not include a boiler; users need to prepare or purchase a compatible boiler to generate steam for operation
• 【Educational and Display Use】Suitable for mechanical enthusiasts, students, and educators as a teaching aid or desktop display model to demonstrate basic steam engine principles