Creating an Internal Feature

You can add material only to the inside of the shellable and core feature that it intersects within the same body.

The Shellable Properties are not inherited. Thus, the external boundaries of the feature remains the same, and the internal feature is reduced in a shelled volume.

See Also
Creating Basic Features
About Basic Features
Using the Display Only Parents Option to Retrieve a Creation Context
  1. From the Create section of the action bar, click Internal Feature .

    A feature can have one of the following shape definitions: Prism , Sweep , Revolve , Thick Surface , or External Shape . For more Information, see Working with Shape Definitions.

    Prism is selected as the default shape definition.
    Note: You can change the shape definition. The dialog box for the feature changes according to the options offered by the shape.
  2. Select the profile you want to extrude.

    Tip: If no profile is defined, click Positioned Sketch to sketch the profile.

  3. In the Limits tab under First Limit, select the type and enter the required parameters.
  4. Optional: Click Mirrored extent or under Second Limit, select the type and enter the required parameters.


  5. Optional: Under Thin Properties (available for prism, sweep, and revolve shapes) select the Use param for thin feature check box, select a reference element and enter the required thickness values ().
    1. Select the Use param for thin feature check box to specify the thin feature parameters.
    2. From the Reference list, select a reference type.
    3. Enter the inside and outside thickness values.
    This option enables you to add material on both sides of the profile.
  6. In the Reference list, select Neutral Fiber to add material equally to both sides of the profile.

    Important: The Extend across removed faces check box causes a feature not to be confined within the wall of the deleted face of the shelled volume.

  7. Optional: Click Preview.


  8. Optional: In the Draft tab,
    1. From the Draft behavior list, select Intrinsic to feature.
    2. Set profile plane as the neutral element and enter the required value to define the draft angle.
  9. Optional: In the Fillet tab,
    1. Select among the following check boxes and enter the required values, to fillet the corresponding edges:

      • Lateral radius to fillet lateral edges
      • First radius to fillet top edges
      • Second radius to fillet bottom edges

    2. Select the Fillet profile ends check box, to fillet the end faces of open sketches.
    3. Select the Draft fillets check box, to fillet the drafted edges.
    4. From the Type list under Intersection Fillet, select among the following, to create fillets at required intersections:

      • Intersection with Core/Cavity
      • Intersection with Core
      • Intersection with Cavity

    5. Select the Fillet radius check box to create fillet by adding material to the feature.
    6. Select the Round radius check box to create fillet by removing material from the feature.
    7. Select the Preserve shell thickness check box to maintain the thickness at fillets.
  10. Click OK.
    The internal feature is created. Internal Prism.X is added to the tree in the Solid Functional Set.X node.

    Outside



    Inside