Hyperbolic Holes is a toy that shows how a straight rod, in this case a pencil, can glide through a symmetrical pair of curved holes. The design is based on the hyperboloid, the 3D ruled surface traced by an offset rotating diagonal line [source: buff.ly/37vUVMC]
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The hyperbolic toy illustrates the path of the pencil through space in just the same way as this age old schoolboy illusion of making a solid pencil appear flexible
#ChildOfTheSixties
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Can I ask, Other topics? How to build this type of machine where can I find community of maker?
.. kein Wunder das wir bei der 4. Dimension schon aussteigen ..
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Can you make it so the pencil flips 180 degrees in between, or possibly constantly spinning all the way round
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