The plate part cannot be trimmed with the available boundaries - Intergraph Smart 3D - Administration

Intergraph Smart 3D Troubleshooting Reference

Intergraph Smart 3D
Administration & Configuration

Meaning: The plate part cannot be trimmed with the available boundaries. This message displays for various reasons that can be case-specific or geometry-specific.


  1. Recompute the object.

  2. Check for the plate system or related logical connections on the To Do List.

  3. In Molded Forms, check that the plate system boundaries form a closed surface. That is, there should be no gaps between the boundary objects.

  4. Check for any missing logical connections. Logical connections provide the boundary data that is needed during detailing. Recompute the parent system to generate any missing logical connections.

    1. Supporting profile was cut back using an end cut with a high web clearance value.

    2. Cutting back the profile creates a gap in the bracket boundaries.

  5. Verify that all boundaries provide an appropriate trimming surface for the whole thickness of the part. In the following example, the bracket is created in Molded Forms with no problem, but the thickness of the bracket is not completely bounded by the supporting stiffener's flange surface.

    1. Change the bracket thickness direction so that the bracket can be trimmed properly with the supporting profile flange.

  6. If necessary, add sketched boundaries where there are gaps in the boundaries.

    1. Gap.

  7. When you are using sketched boundaries, verify that the final part has a surface contact with the sketched boundary surface after detailing. All boundaries must provide a trim surface. If the trim surface cannot be used as a boundary, the trimming fails.

1. Sketch boundary 1.

2. Molded surface of the boundary plate.

3. Additional boundary sketch used to connect the molded surface of the plate with sketch boundary 1.

1. You can work around this situation by grouping the additional boundary with sketch boundary 1.

Additional Cases

Additional Case 1:

1. Surface of the plate part in the To Do List.

2. Smart 3D does not use this sketch in trimming.


1. Boundary

2. Sketch boundary.

3. Molded surface of the bounding plate.

Additional Case 2:

1. Plate edge as boundary.

2. Trimming surface of the bounding plate.

3. Molded surface of the bounding plate.

4. Sketch boundary.

The actual plate part in the trim issue is hidden in the following figure.

1. Plate edge as boundary.

2. Sketch boundary used to join the bounding edge and the bounding plate (green line).

3. Even though the sketch is large enough at the Molded Forms level, the software uses only this segment as the boundary. The trim surface from this segment of sketched boundary is not used in the trim.

4. Trimming surface of the bounding plate.

5. Molded surface of the bounding plate.


Additional Case 3:

A sketched boundary connects two molded surfaces of two bounding plates, but the sketch cannot be used for trimming.


1. A sketched boundary with all three lines connected as a single group resolves the issue.

Additional Case 4:

1. Two sketches that do not participate in the trim.


1. Group these two sketches into a single group.

2. Group these two sketches into a single group.