BlendEdge

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

1. Select edges.
2. Select a handle.

Command-line options

ShowRadius=Yes/No

Controls the display of the current radius in the viewport.

NextRadius

Specifies the radius for the next handle.

ChainEdges

Automatically selects curves that are touching the selected curve.

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.

Radius/Distance options

The Radius and Distance options appear on the command line when you drag a handle grip.

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.

Note

Only added handles can be removed.
The default handles at the ends of each open edge segment cannot be moved or deleted. This is the minimum information the command needs in order to work.
The handle at the end of a single closed edge can be moved but not deleted.

RailType options

Three rail types control the intersection.

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.

Tips

Always blend from the largest radius to the smallest radius across a model.
Use MergeAllFaces or other modeling method to remove as many edges as possible. Fewer intersected edges = Fewer problems.
Make sure there is enough room for the blend surface to trim and join with adjacent surfaces.
The success of the blend operation depends on the angle relationships between surfaces, the sharpness of the bend in the rail around corners, and rail type.

See also

Fillet, blend, or chamfer between curves and surfaces


Rhinoceros 5 © 2010-2015 Robert McNeel & Associates. 17-Sep-2015