Watch this machinist create five extremely tiny nested cubes

A turner's cube is a traditional machinist's exercise to test consistency and tolerances when milling metal. But this two-millimeter cube in a cube in a cube in a cube in a cube is next-level skill.

He says "I etched it after machining to remove the burrs and to give it a nice surface finish." He also shows that if properly milled, they spin perfectly like a top.

Here's the regular-size turner's cube people usually create:

A 2 mm cube in a cube in a cube in a cube in a 10 mm cube (YouTube / Latheman's crazy machines)

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