I am making a CNC machined stirling engine for high school my engineering class. Before I can get started I need people to fill out this survey to help me decide which design to go with. Thanks! Stirling Info http://en.wikipedia.org/wiki/Stirling_engine http://www.youtube.com/watch?v=rN71k...eature=related Stirling Survey 1. What should the base of the stirling engine be made of? A. Maple B. Oak C. Cherry 2. What design should the flywheel have? A. Solid B. Decorative C. Strait spoke style 3. What should its purpose be? A. Desktop model B. Generator C. Fan 4. What should the heat source be? A. Sun B. Candle C. Gas 5. What type of metal should the majority of it be made of? A. Brass B. Aluminum C. Steel 6. What type of stirling engine should be made? A. Alpha B. Beta C. Rhombic Drive 7. How much space should it occupy? A. Larger than a shoebox B. Smaller than a shoebox 8. Do you have any comments, suggestions, questions about designing and building the engine?