Drilling Legs for Motor Wires

I'm using a custom CNC milled "pass-thru" bolt with my Outer Ankles and Feet.

My Version:

CNC Milled Ankle Bolt

Ankle with Foot (Top View)

Note the ankle pivot bearings visible through the center pass-thru hole.

Ankle and Foot, Wired

Another version of the Ankle Bolt as seen at this year's DroidCon: