[mman1506]

Originally Posted by asid61

I noticed on the plates your radii are pretty variable, with a 0.04 radius in one of the plates. Depending on the machine, this could make it take considerably longer to machine than using a single larger radius throughout, as a larger endmill can take off more material in general in a certain amount of time.

I think your being a little picky. CAM software will try to cut the tightest radius it can with tool specified. You should be able to cut 90% of the lightening holes with a .25 end-mill and then finish things up with a 1/8 end-mill. All in all it should take 8-15 minutes a plate with decent end-mills.