MechDesigner Reference & User Interface > 2.3 Part-Editor > Geometry

1.Click Geometry toolbar > Add Spline

1.Click Geometry menu > Spline

2.Click in the graphics-area to add the first point (node) for the Spline

3.Continue to click at different places* to add points (nodes)

To end Add Spline:

4.Click the first point (node) again to add a Closed Spline
OR
Click the last point (node) again to add an Open Spline.

* Click a Point (Point, start-Point, end-Point, center-Point) of a different sketch-element to merge it with a point (node) on the Spline.

The Spline curve is now in the graphics-area.

Edit a Position of a point (node) on the Spline

Part-Editor: Add dimensions or Constraints

Part-Editor: Drag the point (node)

Mechanism-Editor or Part-Editor : Use the Point Properties dialog

Edit the Spline's Angle at a Node

1.Mechanism-Editor or Part-Editor : Click the Spline to show the Spline-Handles

2.Mechanism-Editor or Part-Editor : Drag the arrowhead of a spline-handle around its Node

3.Mechanism-Editor or Part-Editor : Click the Spline again to hide the Spline-Handles

Edit the Spline's Curvature at a Node

1.Mechanism-Editor or Part-Editor : Click the Spline to show the Spline-Handles

2.Mechanism-Editor or Part-Editor : Drag the arrowhead of a spline-handle further from or nearer to a node

3.Mechanism-Editor or Part-Editor : Click the Spline again to hide the Spline-Handles

Spline-Handles of an Open-Spline and a Closed-Spline

Notes:

•The direction of the spline at a Node is normal to its spline-handles

•The Radius-of Curvature of the spline at a Node is proportional to the length of its spline-handle

•The Radius-of-Curvature of the spline at a Node is symmetrical to the two sides of its spline-handle.

•You can add Constraints to Nodes, but not the Spline's curve.