What if someone asked you to build an engine using nothing but stuff you had laying around your house?
Well... here's an excellent guide everyone should be encouraged to try (great way to get your kids off the playstation for a while) on how to build a simple Sterling engine.
Unlike our well known internal combuston engines, a Sterling engine is an external combustion engine... and can reach up to an amazing 40% efficiency (not that this model will be such a case, of course)
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