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What I thought would be one of the easier jobs was making these 5 arbors. As it turns out I underestimated how difficult it was to turn music wire and to make a good square shoulder for each pivot. I finally finished all of them and was using a parting off tool, a pivot file, and a jewelers file with a safe edge to make the pivot and the shoulder. They even looked pretty good under X10 magnification. 
The 5 finished arbors made from 3/32" music wire. The longer arbor is for the escape wheel.
I completed all 4 lantern pinions. I tested the fit of the arbors in them and after reaming them with a reamer made from the music wire the fit is perfect... nice and snug. 
I also completed all of the solid pinions... From the left are the center pinion, the cannon pinion, and the minute pinion. Cutting the teeth on these was the same as cutting the wheel teeth except I made a new single point cutter since the module size was .85 for the solid pinions and all of the other wheels were a .82 module. 
This is the center arbor still mounted in the 3 jaw chuck after machining and dying the end before cutting the end square for the minute hand. I wanted to leave it chucked up close so it would be more solid when using the end mill. Unfortunately when mounting the 3 jaw chuck on the rotary table there is no hole in the chuck adapter so it would not be possible to do this.  My solution is in the next picture. 
I thought why not drill a hole through the chuck adapter so the arbor would fit through it. I can't see where this would weaken the adapter and if it didn't work as I hoped then a new adapter is only about $5. I only drilled it slightly larger than my arbor but could bore it out bigger in the future if necessary. 
Here is the arbor mounted in the rotary table and almost done milling the end square. 
Drilling the hole for the taper pin that will hold the minute hand on.
Finished center arbor.
Parting off a slice of brass to make the center wheel tension washer.
Tension washer after cutting the 'fingers' and bending them.
Cannon pinion installed on center wheel arbor and hole drilled for taper pin to hold tension washer in place.
Center pinion, tension washer with taper pin holding it in place. 
Hour wheel assembly completed by turning a hub and installing a piece of brass tubing to the hour wheel. 
The entire center wheel assembly. 
Depthing wheels to mark layout.
Front plate coated with layout die so the pivot hole locations can be marked with the depthing tool. 
Both front and rear plates pinned together with the locating pins and clamped in mill to drill pivot holes.
Wheels 2, 3 and 4 installed to check depthing, endshake, etc. Using the flat depthing tool worked great. These wheels/pinions are spinning easily and quietly. 
Escape wheel and pinion added. The relationship from the 4th wheel to the escape pinion is a little close but at this point I don't have a real front bushing for the escape arbor. A hole in the front plate is being used to temporarily support the arbor so I will wait until I complete the front escape cock before I decide if the escape wheel needs re-depthing. The front plate will eventually be cut away behind the escape wheel.