This Skywin DIY Mini Steam Engine Build Kit is a must for any Kid and Adult who likes to experiment and build knowledge by “doing it” instead of just watching it. This Model Engine Kit uses an alcohol lamp to heat water in closed space, water is heated and vaporized into water vapor and volume expansion at the same time, generating pressure to drive piston movement, generating mechanical energy, giving the flywheel an initial speed, promoting piston reciprocating motion, and going motor power generation through gears. Understand the basic principle and application of the steam engine through experiments