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A tiny engine made out of paper is the stuff dreams are made of. Aliaksei Zholner, a software developer from Belarus, takes delicacy rather seriously. he’s been building beautiful treasures out of paper for at least six years and posting clips of them on his YouTube channel.

A comment on one of his videos inspired him to build a paper engine that runs on compressed air last year. But he didn’t stop there.

He’s since made his smallest creation till date, a minuscule single-cylinder air-powered engine with a throttle.

His beautiful engine is really tiny, with a piston stroke and cylinder diameter of 3 millimeters and a shaft diameter of one half of a millimeter.

He has described the process of making his model here (but you need to be able to understand Russian to read it).