Straight Pole, Curved Hole

This will mildly trickle your mind today.  How can a straight pole fit through a curved hole?

HOW IS THIS POSSIBLE?  What illusions are my eyes seeing?

This one is a bigger scale model with the same concept.

The explanation for this is something related to a hyperboloid shape.  You can see the full video here.

Science and math create the best optical illusions.  What more would you like to see?  Comment below.

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