Blend Edge
The BlendEdge command creates a curvature-continuous blend surface between polysurface edges with varying radius values.
The polysurface is trimmed and joined to the blend.
Steps
Select edges. Or, double-click an edge to select tangent edges.
Edit radius handles and options.
Command-line options
-ShowRadius
Yes: Displays radius handles in the viewport.
No: Hides radius handles in the viewport. A hidden radius handle will display when the mouse cursor is close to it.
-NextRadius: Specifies the radius for the next edge.
-ChainEdges: Automatically selects connected edge based on continuity.
-FaceEdges: Pick a face to select its boundary edges. Tangent edges are excluded.
-PreviousEdgeSelection: In cases where the command is canceled or ended prematurely, the PreviousEdgeSelection option re-selects the previously selected edges. Supports multiple sets of previously selected edges for up 20 previous edge sets.
-TrimAndJoin: Trims and joins the resulting surface to the input surfaces. History only works if TrimAndJoin=No
-SelectEdges: Allows selecting more edges after the selection has been closed.
-Preview: Displays a dynamic preview. You can change the options and the preview will update
-Edit: Edit the most recent selected set of edges.
"Tip": When no command is running, double-clicking the object is the alternative way to start the editing mode.
To edit edges
1.Select the object to edit. The editable edges highlight.
2.Edit the size of the handles.
3.Click the SelectEdges option.
4.Use Shift + click to add edges. Use Ctrl + click to remove edges. Remove all edges in the most recent edge set to return to the previous edge set.
Tip: Radius and Distance options appear on the command line when you drag a handle grip.
Radius/Distance options
-FromCurve: Select a curve. The radius of the curve at the picked location will be used.
-FromTwoPoints: Pick two points to show the radius distance.
Handle options
-AddHandle: Adds a handle along the edges.
-CopyHandle: Adds a new handle using the distance from the selected handle.
-RemoveHandle: Visible only when at least one handle has been added.
-SetAll: Sets the distance or radius for all handles.
-LinkHandles: Editing a single handle updates all handles
RailType options
-DistFromEdge: The distance from the edge curves determines the intersection.
-RollingBall: The radius of a rolling ball determines the intersection.
-DistBetweenRails: The distance between the edge rails determines the intersection
-Preview: Displays a dynamic preview. You can change the options and the preview will update.
-Edit: Allows changing the radius of existing blends.
For more information, please refer to the Rhino documentation.
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