First of all, thanks to everyone for the encouragement. Though it was general community sentiment, the "stick to it" attitude that everyone voices here is really helpful.
So, after
3 years (and a couple of months), I have finally completed my CNC. I had it writing with a marker last year, but I broke it down to paint before I did all of the wiring. This is a JGRO build straight from the plan. The only modification was the metal plate for the Y-bearing. I used a HobbyCNC motor /controller kit.
Last night, I ran the first, full up test with the rotary tool powered up and cutting a piece of MDF.
Here is a close up of the cuts. I took some 180 grit sandpaper over the MDF after the cut to defuzz it.
~Dantourin