Recognizing Complex HolesIf you want to recognize complex holes (holes more complex than countersunk , counterbored , or counterdrilled holes), we recommend you use the Manual Feature Recognition command , instead Automatic Feature Recognition . This avoids solving ambiguous cases, as illustrated in the following example.
Here, the hole is counterbored at both ends and therefore can be defined in two different ways:
For more information about the different types of holes, see Part Design User's Guide : Sketch-Based Features : Working with Holes |