Moving ever closer to getting this DIY-Oko 3 slowly completed. Now I can finally see how one of the motor mount plates will roll along on the rails.

Materials:
1X 7" x 9.5" 1/4" thick 6061 aluminum plate

Feeds and Speeds:
Depth of cut = 0.3mm
Spindle speed = 13000 RPM
Feed rate = 160mm/min
Plunge rate = 100mm/min

Sadly this is kind of a boring update. However, everything is going smoothly right now, so I can't complain too much. And, some progress is always better than no progress. Milling out the x-axis motor mount plate really wasn't any harder than the y-axis end plates. The only concern I really had with this particular piece was whether or not my spacing for the v-wheels was going to be correct. Which according to the picture below looks like it's just fine.