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1.Pour a cup of hot coffee, put the stirling on the cup, it run magically.
2.When it slows down, the coffee temperature is suitable for drink. Enjoy physical powertrain mechanism display and coffee.
3.It also can work on top of ice cube. Some guys put the stirling on cup of hot water and put small ice cubes on the stirling upper plate.
4.This makes the temperature difference much bigger than normal, then it runs even more fast and crazy.
To be admired and to be talked more from your friends if you have this magic stuff.
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