Recognizing a Boolean Feature: a Positive Volume

You can recognize Boolean features. You will recognize this type of features when the initial geometry is composed of complex shapes. You can also use this capability when the recognition of standard features fails. Boolean features can be recognized as Remove (negative volumes) or Add (positive volumes) entities.

Our scenario here illustrates how to recognize positive volumes from two sets of disjoint faces.

See Also
Recognizing a Boolean Feature: a Negative Volume
  1. To recognize the brown and the red volumes, from the Recognize section of the action bar, click Manual Feature Recognition .

    The Feature Recognition dialog box that appears displays a list of features you can recognize.

    Important: Using this product release, the features you can recognize are the following ones:
    • Pad
    • Pocket
    • Hole
    • Fillet
    • Chamfer
    • Shaft
    • Groove
    • Boolean
    • Draft
  2. Select the Boolean option.
  3. First, we recommend to select the Chain up to faces box.
  4. Select the face as shown.


    The face turns blue indicating that this is the face to be kept.

  5. As the brown and red volumes are two disjoint sets of faces, you need to recognize both volumes successively. So, to recognize the brown volume, click the Selected Objects box and select its upper face. 5 faces are now selected as well as displayed in the Selected Objects box.


  6. Click OK to confirm. Add.1 has been added to the tree.
    Textual indications designating the selected faces appear in the geometry to help identify the selection.
  7. To recognize the red volume, click Manual Feature Recognition .
  8. Select Boolean again, then select the upper face.
  9. Select the Chain up to faces box and select the face parallel to the face previously selected. The face turns blue indicating that this is the face to be kept. 5 faces are included in the selection as indicated in the Selected Objects box.
  10. Click OK to confirm.Add.2 has been created and added to the tree.