Very Nice! The radius on those fillets look great! Did you interpolate the holes and finish bore or was it good enough with the interpolation alone for what you are targeting? I find that if I interpolate with a final spring pass I am always darn close to round. Obviously for some items I'll put the boring head in the spindle, but a well maintained tormach and a good stiff carbide cutter seem to do pretty darn well for me.