Editable NURBS Quick Help

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The EditableNURBS object is a Power NURBS Object that has no sub-object history and can be edited in much the same way an Editable Mesh can be edited. Imported NURBS become EditableNURBS objects. Note that when you convert an nPower object into an Editable NURBS, you will lose the construction history for that object.

Visibility:  Open the visibility mode dialog which gives various options for duplicate face removal, flipping faces and setting visibility..
Delete Sel:  Deletes the selected face(s) or elements.  Note that the "Delete" key is also bound to the Delete function.
Join Sel:  Joins the selected faces or edges together using a Sewing operation.  This operation combines coincident or nearly coincident edges into a single edge.
Join All:  Joins all of the coincident edges together
Explode Sel:  Explodes the selected faces into a separate elements which may be moved around independently.
Explode All:
  Explodes all of the faces into separate elements which may be moved around independently.
Un-Trim:  This command removes the trimming of faces that are trimmed by curves.
Clean Edges: Removes edges which are interior to a face and do not trim the face.
Freeze Mesh: Remove the NURBS Brep and treat this object like a mesh.  Note that this operation is not reversible.  Once you freeze the mesh you can no longer edit or change tessellation settings.
Sewing: Opens the advanced sewing dialog with advanced options not found in "Join All".


The bottom part of the dialog gives valuable information about your selected object.  If you are joining faces or sewing, you can observe these values to determine the results of your operations.

# Edges:  Tells how many edges there are on your object
# Open E:  Tells how many open edges there are.  These are edges which have only one face.  These are non sewn edges.  This is an important indicator for identifying closed solids. If you are doing solids operations (like filleting or shelling), you want 0 Open Edges.  If you have more than 0 Open Edges, you don't have a closed volume.  See also the number of Volumes.
# Elements:  Tells how many elements there are.
# Vertices:  Tells how many vertices there are in the elements
# Faces:  Tells how many faces there are
# Volumes:
  Tells how many closed volumes there are.