It's been a long time, largely because I found lots of other interesting projects along the way. But I now have 4 CNC axes on my Harrison Universal and a setup which lets me hob gears too.
This video shows it going through its paces:
Other videos in the same gallery show it hobbing a timing pulley and a gear pinion.
Photos of the build process are in this gallery:
I am more than happy to loan the patterns to anyone else wanting to do the same conversion.