Microcosm Mini Beam Steam Engine & Boiler Review (from Banggood)

If you would like to get one of these nice miniature beam steam engines, you can click here:
https://www.banggood.com/Microcosm-Mini-Steam-Boiler-Steam-Engine-Model-Gift-Collection-DIY-Stirling-Engine-p-1313129.html?rmmds=category&cur_warehouse=CN

Or for the mini free piston stirling cycle engine here:
https://www.banggood.com/Stirling-Engine-Model-Free-Piston-Adjustable-Speed-External-Combustion-Engine-with-Vertical-Flywheel-Physics-Science-Toy-p-1736595.html?rmmds=category&cur_warehouse=CN