The proper orientation for the type of cut. If you have a Back tool post the
orientation is preferred. For Front tool posts, the
orientation is preferred.
An 80 diamond is preferred but the default selected tool must have an included tip angle of at least a 55. You can override the tooling selection with a tool with a narrower diamond insert, but such a tool is not automatically selected.
Note: Tip radius, tool length, and insert grade are not taken into account.