Just got the MF106ZZ ball bearings and some 6061 aluminum bars for my DARwIn-OP robot clone.
I cut a bunch of HN07-I101, and RX28-CAP on my lathe as in my test cuts. I devised a tool to hold the HN07-I101 and FR07-F101 while drilling the missing eight 1.6mm hole pattern.
The hole pattern is drilled on a Sherline Mill using a #1 center drill and a 1.6mm drill.
Finally the HR07-I101 Bearing Idler has to be tapped to M2.
Updated: The gcode cut programs are in the Code Section and zipped in File Section in sourceforge repository for cloning the DARwIn-OP Robot. The tool is machined on a lathe and finished on a mill for the 4 clamping screws.