Trim two adjacent surfaces by extending intersections to complete the trim.

In the Feature toolbar, within the Offset surface or Plane dropdown command menu:

Feature toolbar indicating Mutual trim icon


  1. Click Mutual trim icon.

  2. Select the first surface.
  3. Select the second surface.
  4. For each surface, click the Keep opposite side arrow to indicate which side is kept after the trim operation:

    Before directional arrows are flipped, above

    Directional arrows flipped, above

  5. Optionally, check the Merge box to merge both surfaces into one surface.

The surface (or surfaces) are listed in the Surfaces list.