LTD Stirling Engine Running on Ice
http://StirlingBuilder.com - This is a hand made LTD Stirling engine running on ice and sunshine. It runs in the opposite direction when the heat is on the bottom side. This engine will also run from the heat of a warm hand. I have made quite a few of these. I like the square design. It is easy to build, and it has more surface area than a round engine made from the same size material.