NURBS

Create and edit a NURBS curve, which is a free-form curve.

Create a NURBS Curve

Create a NURBS curve.

  1. On the ribbon, click the Curves tab.
  2. Click the NURBS icon.

  3. Optional: In the guide bar, enter a Degree, and then press Enter.
    Tip: You need to enter 2, 3, 4, or 5. Enter a higher degree for a smoother curvature.
  4. In the modeling window, click to place the control points.
  5. Right-click and mouse through the check mark to exit, or double-right-click.

Edit a NURBS Curve

Reposition and reshape a NURBS curve.

  1. Double-click a NURBS curve to enter edit mode.
  2. Edit the NURBS curve.
    To Do this
    Reposition a point
    • Drag a point.
    • Click a point, click the chevron, enter the x, y, and z coordinates, and then press Enter.
    Delete a point Click a point, and then press Alt+D.
    Add a point While holding down Alt, click or drag the desired additional point .



    Smooth the curve Click a point, and then click Smooth.
    Sharpen the curve Click a point, and then click Cusp.
    Open the curve Click a point, and then click Open the curve here.
    Note: The curve needs to be closed before you can open it.
    Add weight to a point Click a point, click the chevron, enter a Weight, and then press Enter.
    Note: Add weight to a control point to give it greater influence over the shape of the curve.
  3. Right-click and mouse through the check mark to exit, or double-right-click.
    Tip: To close a curve, select one end point and drag it over the other until you see the preview of the closed curve.