All-metal Horizontal Single Cylinder DIY Steam Engine Stem Model Set

All-metal Horizontal Single Cylinder DIY Steam Engine Stem Model Set A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. Through operating the mini steam engine model, you can master the energy conversion principle. Ideal for using as teaching aids, ornaments, and engine lovers.Features: 1, UNIQUE STYLING ---- This is a Mini hot live steam engine, It's small size. Vertical modeling, design dignified retro, exquisite workmanship. By heating the small boiler, it can run normally. It is a high-end handicraft that is collected and appreciated.2, EXTREMLY FINE CRAFTED ---- Full brass made of boiler, the bracket is made of stainless steel. high quality and durable. exquisite design. Fine grinding body, perfect gift for children.3, EASY OPERATION ---- Open the brass boiler, and inject the water to be 2/3 volume, leave another 1/3 volume f