If you mean this or similar then - Yes.
Tool entered as turn, lead angle 0, Inc angle 0, Radius 3mm, Z offset 0, X offset 0, Max cut Whatever, Cut side right (or left).
Dxf profile as required offset in cad 3mm out. (both profile are visible, but finished profile is masked a bit by the blank).
The outer profile is selected.
The result is shown in EZ1.jpg, cut perfectly to the required profile, except in corner (EZ2.jpg), that shows the 3mm radius on profile.
With the controlled point set to the Radius centre, this is what you will get, exactly as shown in simulator.
All done in seconds after opening the dxf - EZ3.jpg (and a quick manual facing cut added at start).
I hope this is what you want. (Works for me!)