How to cut a pocket in aluminum

How to cut out a pocket in aluminum:

As requested on tech support:

How to cut out a pocket in aluminum:

The provided file has a slotting inner profile cut, which should instead be cut as a pocket so as to reduce tooling engagement — go to the Design tab:

Offset Vectors

to the inside by ~endmill diameter plus 10%

and select both the original and the inset geometry:

and cut as a pocket down to the penultimate pass.

Then edit the Contour toolpath so that it comes after the pocket, and begins at the bottom:

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