Pull surfaces from curves of an existing surface

Create one or more surfaces from a set of surface curves, either along a pull direction, or at an angle relative to the original surfaces.

Use the Multi-Surface Draft tool

NoteMulti-Surface Draft is now the preferred tool to create Flange and Draft surfaces from surface curves.

Choose Surfaces > Draft Surfaces > Multi-surface Draft ❒.
In the control window:
- Set Type to Normal to create a flange-like surface, or Draft to create a draft surface.
- In the Pick Mask section, turn on the types of curves you want to select as input (Surface Isoparm, Surface Trim Edge, and/or Curve-on-surface).
- Set Surface Type to Single surface if you want to create a single flange or draft surface.
- Check on Auto Recalc.
Click or box-select all your curves. The curves can be disjoint (non-touching), G0 (position continuous) or G1 (tangent continuous).
As each curve is added, it is highlighted in yellow, and a flange surface is built. A single flange surface is created no matter how many surface curves you have selected.

NoteOnly G1 input curves allow you to create a flange or draft surface of variable height or angle (using multiple manipulators).
If you set Type to Draft, you will also need to select a pull vector to specify the initial direction of the surface. (Use the Draft Vector Options or use Construction > Vector to create a vector object).
Use the manipulator(s) to adjust the flange/draft surface’s height or angle (see below).

Set the angle or height at a point along the surface

Click one of the handles, then drag left or right to change the parameter, or type a number.
Use the Variable option to determine whether the manipulator controls the angle or height parameter.
If you selected a single curve, or a set of G1 curves, you can add additional manipulators by clicking anywhere on the curve(s).
Hold and -click on a manipulator to delete it.

Alternate method: Use the Draft/Flange tool

NoteThis tool is deprecated and may be going away in a future release. We recommend that you use the Multi-Surface Draft tool workflow described above.

Set up the Flange tool

Choose Surfaces > Draft Surfaces > Draft/Flange ❒.
Set the Mode to Flange, then click Go.
Tip
Drag the tool to the shelf to save a custom version of the tool in this mode.

Pull surfaces from curves of an existing surface

Choose Surfaces > Draft Surfaces > Draft/Flange in Flange mode.
Click the isoparametric curves, edges, and/or curves-on-surface, then click Go.
Do any of the following:
- Use the manipulators to adjust the draft surface.
- -click a point on one of the original curves to add another angle/depth manipulator.
- -click an angle/depth manipulator to delete it.
- Click one of the handles, then drag left or right to change the parameter, or type a number.