Tiny engines made with paper | The Kid Should See This https://thekidshouldseethis.com/post/tiny-model-engines-made-with-paper
Behold engineer Aliaksei Zholner’s working V8 engine, made entirely with paper (and he notes, „some scotch tape on valves to eliminate friction“). At 32 x
look at his 80 x 60 x 40 cm V6 engine working paper model