Remove Surface Fillets

Use the Defeature: Fillets tool to find and remove both round (convex) and fillet (concave) surfaces.

The Defeature: Fillets tool allows you to select a round or fillet, and find all that are larger, smaller, or similar (±5%) in size. In general, it is best to remove small fillets first, then larger fillets, then rounds. When you get to a point where you cannot remove any more, it is time to use other modeling tools and strategies to complete the geometry simplification.

  1. From the Geometry ribbon, click the Defeature > Fillets tool.

    Figure 1.
  2. From the guide bar drop-down menu, select whether to find Rounds, Fillets, or All.
  3. Optional: On the guide bar, click to define settings used to find and select rounds/fillets of a specific size.
  4. Click Find on the guide bar.
    Rounds and fillets in the model are selected and highlighted red.
  5. Review each selected round/fillet by clicking and on the guide bar.
  6. Optional: Select lines that a fillet should ignore.

    Figure 2.
  7. Optional: Select lines which make up the end of a fillet.

    Figure 3.
  8. Remove rounds/fillets in the following ways:
    • Remove all selected rounds/fillets by clicking Remove All on the guide bar.
    • Remove individual rounds/fillets by left-clicking on a selected round/fillet.