Awesome Bill. That is pretty much how I planned to mill oil grooves in my saddle (on the G0704) so now you have proved it will work for me, thanks. I did actually order the material to make my ball nut mounts now so when they are done I will dissemble my mill and add oil grooves at the same time. I ordered (2) 3/16 ball nose carbide cutters to cut the grooves, what did you end up using and how deep?
I used what was recommended in the video, a 1/8" carbide ball. There was no mention of depth so I just WAG'd it and picked 50 thou. That's a bit deep, maybe should have gone 30, but hey it will hold a bunch of oil. 
Yesterday I finished Y-axis ways and drilled the gibb strips by putting them on the saddle and holding them with a 2x4 and C-clamp. Then where the drilled hole meets the saddle I put a small groove (1/2" either side) across the hole to allow for oil flow as the gibb wears and moves. On the sliding side of the gibb I put a 1/8" carbide burr in my Dremmel (sp) and hand cut the oil galley. Same for the opposing dovetail on each axis. Won't show pics as it's pretty ugly. But it's functional.
Next weekend is the fun part: I have to pull the head and head/column slider and modify that. The mod is pretty simple. The head removal not so much. The video shows using two small sections of 4x4 on each side of the head and strapping the head down to the table. Then unbolt the head and use the Y-axis to move the head away from it's mount. I will document as I go along. I will also document how they suggest routing the oiling lines. Pretty slick.
Did you see Will's ring light mod to his PM45
http://www.hobby-machinist.com/showthread.php/27279-Spindle-Light-For-PM45M?p=240529#post240529 ? We should be able to do pretty much the same thing.
