4 Stage Cardan Shaft and Geneva drive - Marble Clock Seconds Display Pt.7

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In this new installment of the Marble Clock saga I took care of the connection between the elevator and the marble selector as both need to work in sync.

I got lots of suggestions to use a Geneva drive and of course I did in the end go for it, a bit too strongly maybe?

And did something that I wanted to do for a long time, a 4 stage cardan shaft to transfer rotational movement between two shafts 90 degrees apart.

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