This guy makes tiny working engines out of paper
by Mark Frauenfelder from on (#10PCK)
Aliaksei Zholner makes itty bitty engines with paper and "some scotch tape on valves to eliminate friction." They run on compressed air delivered via a papercraft throttle.https://youtu.be/Pf3jnP6AbM0https://youtu.be/fT_hTHl4wWk[via]