Drawing a Spline Between Points in 3D

  1. Select Enable 3D Sketch.
  2. Click Spline in the Sketch group.
  3. Click to set the first point of the spline.
    Select any point on an object in your design. Hold Alt and click to set the point if you want it to be tangent with an adjacent sketch or edge. When highlighting the vertex (which is actually an end point of one of the intersecting edges which has influence at the time) scroll the mouse wheel to select other adjacent edges with which to set the tangent vector direction, as previewed by the green tangency symbol.
  4. Continue selecting points to draw spline points.
  5. End the spline:

    • Double-click to set the end point of the line.

    • Hold Alt and click to make the end point tangent with an adjacent sketch or edge.

    • Right-click and select Finish Line.

    • Press Esc.

    • Connect the end point to the start point.

    • Click any tool (except the Clipboard and Orient tools).