Undercut in bore will not fully profile

[diamondbrent]

How do I get a boring tool to follow the undercut as shown in the screen shot? I want the tool to profile from the outside of the bore as far as I can go without gouging the part, but it skips a large portion of the desired path. What am I doing wrong?

[seth.madore · Accepted solution]

Turn on "Allow Radial and Axial Grooving" in your toolpath settings:

 

 

[diamondbrent]

Thank you! That completed the tool path. If you have a moment- why does it leave material on the back wall? Why doesn't the tool path created using projected entities work? 

[seth.madore]

It's leaving material on the bottom because of the boss that's inside the part in conjunction with the tool and tool holder profile