LOFT
 
 
 

Creates a 3D solid or surface in the space between several cross sections.

Access Methods

Button

 Ribbon: Home tabModeling panelLoftNot available on the ribbon in the current workspace.
 Menu: Draw  Modeling  LoftNot available in menus in the current workspace
 Toolbar: Modeling 
 Command entry: loft

The cross sections can be either open or closed 2D objects such as circles, arcs, or splines.

With the LOFT command, you can create a new solid or surface by specifying a series of cross sections. The cross sections define the profile (shape) of the resulting solid or surface. Cross sections (generally, curves or lines) can be open (for example, an arc) or closed (for example, a circle). LOFT draws a solid or surface in the space between the cross sections. You must specify at least two cross sections when you use the LOFT command.

You can use the following objects when creating a lofted solid or surface:

Objects That Can Be Used as Cross Sections

Objects That Can Be Used as a Loft Path

Objects That Can Be Used as Guides

Line

Line

Line

Arc

Arc

Arc

Elliptical arc

Elliptical arc

Elliptical arc

2D polyline

Spline

2D spline

2D spline

Helix

3D spline

Circle

Circle

2D polyline

Note2D polylines can be used as guides if they contain only 1 segment.

Ellipse

Ellipse

3D polyline

Helix    

Points (first and last cross section only)

2D polyline

 

Region

3D polyline

 

Planar face of solid    

Planar surface    

Planar 3D face    

2D solid    

Trace    

With the Path option, you can select a single path curve to define the shape of the solid or surface. With the Guides option, you can select multiple curves to define the contours of the solid or surface.

The DELOBJ system variable controls whether the cross sections, guides, and path are automatically deleted when the solid or surface is created or whether you are prompted to delete these objects.

You can select the cross sections before you start the command.

Select cross sections in lofting order: Select open or closed curves in the order that the surface or solid will pass through

Enter an option [ Guides/ Path/ Cross sections only] <Cross sections only>: Press ENTER to use the selected cross sections, displaying the Loft Settings dialog box, or enter an option

Guides

Specifies guide curves that control the shape of the lofted solid or surface. Guide curves are lines or curves that further define the form of the solid or surface by adding additional wireframe information to the object. You can use guide curves to control how points are matched up on corresponding cross sections to prevent undesired results, such as wrinkles in the resulting solid or surface.

Each guide curve must meet the following criteria to work correctly:

You can select any number of guide curves for the lofted surface or solid.

Select guide curves: Select the guide curves for the lofted solid or surface, and then press ENTER

Path

Specifies a single path for the lofted solid or surface.

The path curve must intersect all planes of the cross sections.

Select path: Specify a single path for the lofted solid or surface

Cross Sections Only

Displays the Loft Settings dialog box.