Is it possible for 10 people with no machining experience to each make a functioning air engine in 4 to 6 hours? I teach precision machining at a community college and am going to do a "free class" to try to generate interest in the program/career. We have 5 manual milling machines and 5 manual lathes. We also have CNC machines as well but I want this to be a hands on class using manual machines. I will also be able to enlist the aide of 3 or 4 advanced students to help with the class. What engine/plans would you suggest? We can make jigs or fixtures ahead of time or pre-machine some parts if necessary. I want them to feel like they did it themselves and leave with a feeling of accomplishment. Comments on prints, safety, etc. welcome.