Curve

Extend a circle or a drawing along a path through points in space — a hook, a handrail, a cable guide.

A curve is a solid 3D shape formed by extending a 2D profile along a path. The path runs through points that you place in space. The profile is a circle or a drawing of your choice. Bent parts start here: a coat hook, a handrail, a cable guide, a length of tubing.

Three selected points, and the curve created through them — Select the points in order and click Curve. The path runs through the points in selection order.

Creating a Curve

Place two or more points with the Add Point tool.
Select the points in the order the path should follow. Hold Shift and click each point.
Click Curve in the toolbar.

The curve runs through the points in selection order. Once the curve exists, its points are hidden from the scene.

Moving a Curve

Select, move and rotate a curve like any other shape. Every placement tool that works on solids works on a curve: the body and axis handles, the rotation rings, alignment to a face, and pasting onto the focus pointer.

The points of a curve stay as reference geometry underneath it. Deleting the curve leaves its points where they were.

Editing the Path

Select the curve and click one of its points. Drag the point to move it, and the curve follows.

Dragging one point of a curve — Select the curve, then drag one of its points.

The Curve panel in the sidebar lists the points and lets you reorder, remove and insert them. See Points.

Parameters

Select a curve to see its parameters in the Value References panel. The Profile row sits at the bottom of the Curve panel.

Parameter	What it controls
Mode	Spline for a smooth path, Straight for segments from point to point
Roll	Twist of the profile from the first point to the last
Radius	Size of a circle profile
Scale	Size of a drawing profile, as a multiple of its drawn size
Profile	Circle, or a drawing from the catalogue

In This Section

Points — place points and edit the point list
Mode and Roll — smooth or straight path, and twist along it
Profile — circle or drawing, its size, and what happens at a tight bend

Points Place points in space with the Add Point tool, and reorder, remove or insert the points of a curve.
Mode and Roll Choose a smooth spline or straight segments for the path, and twist the profile along it.
Profile Use a circle or a drawing as the cross-section, set its size, and fix a bend that is too tight for it.