Sweep2

The Sweep2 command fits a surface through a series of profile curves that define the surface shape and two curves that define the surface edges.

Toolbar	Menu
Surface Creation Surface Sidebar	Surface Sweep 2 Rails

Command-line options
ChainEdges (rails only)	Select connected edges based on the curve continuity of the connection between segments. How to chain select edges.
Point (cross‑sections only)	Creates a surface that begins or ends at a point. Use this option only at the start or end of the curve series.

Adjust seam options
Flip	Reverses the curve direction.
Automatic	Attempts to align the seam points and directions without intervention.
Natural	Moves the seam points to the way they were at the beginning of the command.

Sweep 2 Rail Options dialog box

Cross-section curve options

Do not simplify

Creates the sweep without doing anything to the shape curves.

Rebuild with ___ control points

Rebuilds the shape curve control points before creating the sweep. Shape curves reconstruct with non-rational curves, so as to enable the continuity option.

Refit within ___

Refits the shape curves before creating the sweep. Shape curves are reconstructed with non-rational curves, so the continuity option can be enabled.

Preserve first shape

When you are matching edge tangency or curvature, your surface may pull away from your profile curves. This option forces the surface shape to match the first profile curve.

Preserve last shape

When you are matching edge tangency or curvature, your surface may pull away from your profile curves. This option forces the surface shape to match the last profile curve.

Maintain height

Removes the association between the height scaling from the width scaling. By default, shape curves normally scale in both the height and width dimensions.

On

Off

Rail curve options

Continuity is only enabled if the rails are surface edges and the shape curves are non-rational, that is, all control-point weights are 1. Exact arcs and ellipse segments are rational.

Only continuity options that the curve structure (point count and rational/non rational) supports will be available.

Position / Tangency / Curvature (Surface edges as rails only)

Sets the continuity for the edge match.

Closed sweep

Creates a closed surface, continuing the surface past the last curve around to the first curve. This option is only available after you select two cross-section curves.

Simple sweep

Creates surfaces using exact input. This option generates simpler surfaces in cases when the curves are perfectly set up. The surface inherits the structure of the input curves.

Place more sections to do Simple sweep. The sections must be placed at the edit points of the two rails.