POCKETING
KEN,
I don't use the plunge much, I use the ramp.
But I took a look at the plunge/ pocket in MILL2000 and on the pocket I drew, it always starts at the same points and the tool path is the same no matter where you pick your boundarys.
It will change with a different tool size as it figures out how to machine the pocket. But again it stays the the same no matter where you select the boundarys and islands.
You could use the plunge at marked drill points if you need to force it to start in a special place.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)