Math Monday: Skewer Hyperboloid
FEBRUARY 8, 2010

by George Hart

Thirty two shish-kabob skewers and 176 small rubber bands are all it takes to make a beautiful hyperbolid of revolution. This is an example of what is called a “ruled surface” meaning even though it is curved, it is made of straight lines.
Here is the same object seen from the top.  Make one of your own following the instructions here, but don’t skewer yourself!

This article first appeared on Make: Online, February 8, 2010.

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