Cap Surface

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Select NURBS object. > Modify panel > Create Surfaces rollout > Dependent Surfaces group box > Cap

Select NURBS object. > Modify panel > NURBS toolbox > Create Cap Surface button

This command creates a surface that caps a closed curve or the edge of a closed surface. Caps are especially useful with extruded surfaces.

Capping an extrude surface

Procedure

To create a cap surface:

In a NURBS object, turn on Cap.
Move the mouse over the closed curve or the closed edge of a closed surface.

If the cap can be created, the curve or edge is highlighted in blue.
Click the highlighted curve or edge.

The Flip Normals control lets you flip the surface normals at creation time. (After creation, you can flip normals using controls on the Surface Common rollout.)

Interface

While a cap surface sub-object is selected, a rollout with cap surface controls is displayed at the bottom of the Modify panel.

Cap Surface rollout (creation time)

Flip Normals—Turn on to reverse the direction of the cap surface's normals.

Start Point—Adjusts the position of the edge or curve's start point.

The start point is displayed as a blue circle.

Cap Surface rollout (modification time)

Replace Curve—Lets you replace the parent curve or edge. Click the button, then click the new curve or edge on which to base the cap.

Start Point—Adjusts the position of the edge or curve's start point.

The start point is displayed as a blue circle.