Suggestion - Add UnweldEdge to Stitch icon with right button

Rhino SubD
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1

I’ve been working heavily with SubD lately, and I found myself looking for the exact opposite tool to Stitch (essentially a “rip” or “split” command for SubD edges/vertices).

After some digging, I realized that UnweldEdge and UnweldVertex do exactly what I need. However, because these are traditionally mesh-specific commands, they feel incredibly hidden for SubD users—especially newcomers. Since they work perfectly fine on both geometries, it feels like they deserve better visibility in the SubD toolset.

I have two suggestions to improve this workflow:

  1. Add Unweld to the Stitch Interface: Would it be possible to add UnweldEdge as a right-click option on the Stitch toolbar button? It’s the logical opposite operation, and putting them together would make discovery much easier.

  2. Unify Unweld for Edges and Vertices: Currently, Stitch handles both edges and vertices seamlessly within a single command. However, unwelding forces you to choose between UnweldEdge and UnweldVertex. Could we get a unified Unweld command for SubD that detects whether you have an edge or a vertex selected? I understand this might affect legacy scripting for meshes, but from a pure SubD modeling logic perspective, a unified tool would be much more intuitive.

2

does split at edge loop do what you want?

3

Hi @theoutside, I didn’t realize Split worked on SubDs — I always thought it was strictly a NURBS function!

That said, I feel like there should be a more intuitive and direct counterpart to Stitch placed prominently in the SubD UI.

While commands like Trim and Untrim are accessible for SubDs, they aren’t true SubD tools since trimming converts or destroys the native SubD structure. Functions like Knife or InsertPoint feel much closer to what a SubD workflow actually needs.

Also, out of curiosity: what is Untrim supposed to do on a SubD that earns it a spot in the SubD Tools toolbar?