Untrim Surface

Use it!

(3D only) Used to:

• Reverse the sense of trim boundaries in a B-spline surface or SmartSurface — that is, convert holes to surfaces and vice-versa.

• Remove one or more trim boundaries (holes) from a B-spline surface or SmartSurface.

Where a trim boundary is shared by two faces, along an edge, no change is made.

Tool Setting	Effect
Trim Boundary	Sets the task to be performed. Reverse — Reverse the sense of the boundaries. Remove All — Remove all boundaries. Remove One — Remove one boundary.

To reverse a surface boundary

1. Select the Untrim Surface tool.


2. In the Tool Settings window, set Trim Boundary to Reverse.


3. Identify the surface.


4. Accept the change.

   Left: Identify the surface (1). Right: Accept to reverse the surface (2).

To remove trimmed regions

1. Select the Untrim Surface tool.


2. In the Tool Settings window, set Trim Boundary to Remove All or Remove One.


3. Identify the B-spline surface.


4. If Trim Boundary is set to Remove One, identify the boundary to remove.


5. Accept the removal.

   Left: Identify the surface (1). Right: Accept to remove the trimmed region (2).

Key-in: UNTRIM SURFACE