A5-3 HOT FAN MATERIAL KIT (MODEL MAKER KIT) The fan kit is powered by steamed hot water (80°C or above). Just put pipe into a glass of hot water, the fan turns automatically until the water is below the required temperature. Model building person must love it. (Comes with instruction manual, includes component drawing, assembly drawing, parts list, measurements etc) *MATERIAL kit (made of brass) includes all castings and raw parts. Parts must be machined, with some knowledge of tooling to complete (right side of the photo material kit only). It is a great project for medium level machinist. (also stirling engine kit and other model product kits are available in our eBay store)