Applicable occasions - Suitable for science projects, physics and engineering demonstrations, and classroom teaching. Applicable people - Suitable for ages 8 and up; helps observe the Stirling engine operation more intuitively. Easy to assemble - Model comes in parts and is designed for hands on assembly; components can be repeatedly disassembled and reassembled to build practical skills. Material and durability - Made of zinc alloy; strong and resistant to deformation; corrosion resistant and wear resistant. Gift idea - DIY Stirling engine model; a thoughtful gift for anyone interested in science; suitable for friends, family, parents, colleagues and others. Use scenarios - Classroom demonstration: illustrate heat to mechanical energy conversion and observe the Stirling engine in action. - Home STEM project: a hands on build and observation activity for children 8 and older to develop engineering and problem solving skills. - Science club or workshop: a practical project to practice assembly, understand engine operation, and foster curiosity about thermodynamics and mechanics.