In Rhino BETA , Rebuild now uses new adaptive rebuild technology to match the shape of the input curve with higher accuracy compared to (the now renamed) RebuildOld, given the same number of control points. [image] What is Rebuild? The Rebuild command reconstructs selected curves or surfaces to a …

Does that mean that the new Elmo technology will not be used for rebuilding surfaces in Rhino 9, and implementing it is postponed for Rhino 10 instead? I read in another topic that it “may” be developed for Rhino 9, too, but the new topic’s name makes me wonder about that.

This is awesome! Have 1% wondered about this everytime I’ve typed “Elmo” for the past decades. What are the Grasshopper equivalent commands?

I did some tests with some of my files using the new Rebuild and RebuildOld commands; the new command is approved. :raising_hands:

[image] Gijs: Rebuilding a curve with many control points to a single span degree 2 curve: [image] rebuild-ex1.3dm (57.2 KB) I imported a logo (.svg or .ai) in Rhino and used it a project then exported to blender also 3ds max but couldn’t extrude it. Then I extruded the logo in Rhino and …

[image] m.oguz: Does Elmo rebuild multiple curves at once and rebuilding curves make Rhino running faster and smaller files? This new rebuild technology can potentially rebuild with fewer control points at the same deviation, but pls try it on your files and share the results. Again, Rebuild …

[image] Rhino_Bulgaria: Does that mean that the new Elmo technology will not be used for rebuilding surfaces in Rhino 9 no, but there are no guarantees yet that this new tech can be applied. In Dale’s words: For v9, we are investigating if the new algorithm can be used to improve surface re…

Lets hope that it can be implemented, because rebuilding a dense surface into a single-span degree 5 with 6 control points is a chaotic nightmare now. :slight_smile: At least new “Rebuild” command is a good start for simplifying dense curves. It seems like the perfect way to clean up some fonts, to…

[image] Gijs: Rebuild currently doesn’t have all the features of the commandline version of Elmo. In current WIP, you will now see this dialog for Rebuild: [image] Kink splitting options are only available once you start rebuilding one or more polycurves. Access to old Rebuild is still av…

Great new feature. Is this Rebuild Command also available in RhinoCommon? If not, is it planned for Rhino 9?

This looks lika a major improvement. Thanks! E.g. offset curves often have LOTS of control points and it is always a lot of work to simplify them while keep them parralel. Even if my workaround works well I love saving time! Looking forward to the GH component.

Rhino BETA Feature: Improved Rebuild command for Curves

Serengeti (Rhino BETA)

osuire May 25, 2026, 2:05pm 18

Does that mean that the FitCrv tool also gets an upgrade ?

FitCrv often produces crazy wiggly results…

Example : FitCrv goes bananas on that one

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Rhino BETA Feature: Improved Rebuild command for Curves

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