From version 5.x is possible define tool holder geometry for rotary tools ( mill, drill, taps, ..) and for internal turning tool.
You can define tool holder from tool store dialog.
Click on "HOLDER" tab and enable the [Show Holder] property , as showed in image below.
For rotary tools, you can select the holder kind and define the tool holder body with the 4 available properties
For internal turning tool, is possible define the :
- Body diameter
- Overhang length
- Relieve depth
- Relieve length
- Minimum entry diameter