Ooherr, I got an email when I got @-mentioned. How civilised!
The comments I would have are probably mentioned in the README on the above-linked git repository (people with QuickCircuits and only demo software email me semi-regularly so I added some details there as a preemptive response). I would say I had success with the QuickCircuit, but not proportional to the effort put in (note the “I don’t recommend anyone do this” paragraph in the aforementioned README).
I also have a bad track record with CNC equipment, which is worth keeping in mind…
Happy to try and answer any further questions though.
PS The spindle shaft might be a little bit bent… hopefully not though