A Rough Turn cycle can leave areas of the profile uncut because of the geometry of the profile and the geometry of the complete tool (not just the insert).
The solution to this problem lies in using a left-handed tool.
These “shadowed” areas can be backturned using a left handed tool in a Rough Turn cycle. Select the toolpath produced by the first Rough Turn cycle to define the billet geometry for the left-handed Rough Turn.
button or grooving tools could also be used to clear difficult areas in
only one cycle, although you must consider the strength of the tool against
the toughness of the material. For example, a button tool would be ideal
for cutting plastic but not a sensible choice for cutting hard steel.