spinning spiral ball track loop

[Diamabolo]

Everything revolves on this marble run.
Either the track revolves around the center or the central lift transports the balls up....or both at the same time

The construction of the ball track is inspired by the GBC model from NICO 71


 

 

[1963maniac]

That's really COOL!! 

[Yoggington]

Oh my, this is excellent work.