Parametric OpenSCAD Clock Gear Train (Hours, Minutes & Seconds)

Extended the previous Proof of Concept for the printable clock to include the entire gear train.

I had to use a total of eight pinion wheels, four to gear down from the escapement/seconds wheel to the minutes wheel, and another four for the hour wheel (5,3,2,2). Two would make for high gear ratios (10,6 or 8,7.5 typically) which are hard to print, and three would make the minute hand run counter-clockwise.

I wrote the OpenSCAD script so that all the wheels are equidistant (by adjusting th