• Choosing multiple edges for blending using chain
• Blending with 2 variable radii
• Blending with N variable radii
Blend rules
Creo Elements/Direct 3D Access uses the following rules when blending edges:
• The Radius box always displays the active blend radius. The active blend radius is the radius that is attached to the edge that was picked last (the highlighted edge).
• The active blend radius will be attached to any new edge (an edge with radius 0) you pick, unless you enter a new blend radius after picking the new edge.
• If you gave an edge a radius value and now want to modify the radius (before you click OK), specify the edge and edit the radius in the Radius field.
• If you use the Select tool, the value in the Radius box is used as the blend radius for all the selected edges.
When to blend edges using Behavior Control
The Behavior Control options in the Create, Modify, and Insert Blend dialog boxes control the shape of blends where they intersect other faces.
• Intersect: The blend faces do not roll over edges of connected faces.
• OnTanFaces: The new blend connects smoothly with an intersecting tangential face.
• OnSharpEdge: The blend connects smoothly with a sharp edge.
• OnAnyEdge: The shape of the blend rolls smoothly into the existing edges.
Choosing multiple edges for blending using chain
The Chain Selection option in the Create, Modify, Insert Blend dialog boxes lets you select several tangentially connected edges with a single mouse click, instead of using the Select tool. Only use this option when creating blends using a constant radius and not a variable radius. This is because a variable blend has different start and end radii and if chained together, would not produce a smooth blend.
The sequence of edges selected stops when two edges at a common vertex are not tangentially connected, for example, when there is a bend in the edge.
Blending with 2 variable radii
1. Click Create Constant Radius Blend.
2. Click to open the Create Blend dialog box.
3. Click Var 2 Radius in the Type box.
4. Click the edge to blend. Creo Elements/Direct 3D Access displays Start and End labels.
5. Enter the value for the start radius in the Start Radius box.
6. Enter the value for the end radius in the End Radius box.
7. To accept the blends, click . To cancel the blending, click .
8. The Reverse option lets you reverse the start and end points of the radius.
Blending with N variable radii
1. Click Create Constant Radius Blend.
2. Click to open the Create Blend dialog box.
3. Click Var N Radius in the Type box.
4. Click the edge to blend. Creo Elements/Direct 3D Access displays Start and End labels.
5. Type a value for the start radius.
6. Type a value for the end radius.
7. Now select Position in the Create Blend dialog box.
8. Click anywhere on the edge to bring up a new box at that point.
9. Type a value to specify the blend radius at that point.
10. Repeat the procedure until you have the variable blend you want.
11. To accept the blends, click . To cancel the blending, click .
12. The Reverse option lets you reverse the start and end points of the radius.
Create Constant Radius Blend.
to open the Create Blend dialog box.
. To cancel the blending, click 
.