Extend

Toolbar	Menu
Curve Tools Extend	Curve Extend Curve > <Options>

Toolbar

Toolbar: Curve Tools | Extend

Curve Tools
Extend

Curve

Extend Curve >

The Extend command lengthens or shortens a curve.

Steps

Select a boundary object, type a length, or press Enter to extend without boundary edges.

Select a curve or an surface edge near the end.
The extension will be automatically joined with the original curve.
To extend to multiple objects, pick the end of the curve again to extend the curve beyond the first boundary to the next.

Pick the end of the extension or type a length.

Note

You can use any combination of curves, surfaces, and solids as boundary edges.
If you want to extend two curves to meet each other simultaneously, use the Connect command.

Command-line options
Type	Natural Lines, polylines, and polycurves with a line at the end to extend are extended by line. Arcs and polycurves with arc at the end to extend are extended by same radius arc. Other curves are extended smooth. Arc Makes an arc extension tangent to the original curve. Arc options Center Extends a curve with an arc by picking the arc's center and endpoint. Center steps Pick the arc's center point. Pick the arc's end point. ToPoint Extends a curve with an arc by picking the arc's endpoint. ToPoint steps Pick the arc's end point. Line Makes a line extension tangent to the original curve. Smooth Makes a smooth curve extension curvature continuous with the original curve. Smooth option ToPoint Extends a curve smoothly by picking the curve's endpoint. ToPoint steps Pick the curve's end point.
Undo	Reverses the last action.
SubCrv	Type subcrv to select part of a curve as input.

Command-line options

Type

Natural

Lines, polylines, and polycurves with a line at the end to extend are extended by line.

Arcs and polycurves with arc at the end to extend are extended by same radius arc.

Other curves are extended smooth.

Arc

Makes an arc extension tangent to the original curve.

Arc options

Center

Extends a curve with an arc by picking the arc's center and endpoint.

Center steps

Pick the arc's center point.
Pick the arc's end point.

ToPoint

Extends a curve with an arc by picking the arc's endpoint.

ToPoint steps

Pick the arc's end point.

Line

Makes a line extension tangent to the original curve.

Smooth

Makes a smooth curve extension curvature continuous with the original curve.

Smooth option

ToPoint

Extends a curve smoothly by picking the curve's endpoint.

ToPoint steps

Pick the curve's end point.

Undo

Reverses the last action.

SubCrv

Type subcrv to select part of a curve as input.

Extend

Steps

Note

Natural

Arc

Arc options

Center

Center steps

ToPoint

ToPoint steps

Line

Smooth

Smooth option

ToPoint

ToPoint steps

See also