We are excited to share Elmo, a new command to rebuild NURBS curves in 3D to a target control point count and degree. This command aims to preserve some of the good features of Rebuild while generating curves that match the global shape of the input curve with higher accuracy. More specifically, El…

Hi Rafeil, thanks for this feature. How do I Access Elmo from in rhino python. I could not find it on the API

[image] keerthana: How do I Access Elmo from in rhino python Elmo in Rhino WIP continues as Rebuild. But the new functionality is not (yet) exposed. RH-92690 Rebuild: expose new functionality in RhinoCommon

[image] Gijs de Zwart: Elmo in Rhino WIP continues as Rebuild Only for curves, right? From the topic title yes. I wonder why the _Rebuild UI for curves looks so different from the one for surfaces: [image]

Would it be possible to get a toggle for symmetry?

Will the new Rebuild (Elmo) be able to be specified only by Point Count and Degree, or will it also be possible to specify a maximum Deviation? I know there’s a Rebuild Non-Uniform, but perhaps Elmo uses better algorithms and would it be possible to obtain curves that meet the criteria with fewer co…

Another vote for specifying a maximum deviation and allowing the point count to be decided by Elmo - who we know can count - well at least to 5 :wink:

[image] Charles: I wonder why the _Rebuild UI for curves looks so different from the one for surfaces the left is an old MFC dialog, I don’t think that will change for Rhino 9 [image] Martin Siegrist: Would it be possible to get a toggle for symmetry? The new Rebuild technology doesn’…

In the current Rhino WIP rebuild now includes a rebuild to tolerance option.

After the latest update, the “Delete Input” command does not delete the curve. [dfgdfgdfg]

[image] Brv: After the latest update, the “Delete Input” command does not delete the curve Yes, seeing that now. As a temp workaround: turn off and back on should make it work

Rhino WIP Feature: Elmo. A new Rebuild command for Curves

Serengeti (Rhino WIP)

brian (Brian Gillespie) April 14, 2026, 9:41pm 202

RH-94339 is fixed in Rhino WIP

Topic		Replies	Views
Wish: Add "Preserve CP flow" option in the "Rebuild surface" tool Rhino for Windows windows	61	2240	June 8, 2025
Rebuilding Curves - What's the the point significance? Rhino for Mac	41	7059	June 1, 2018
Smarter rebuild nurbs curves (and surfaces) Grasshopper	44	11199	January 4, 2022
Basic rebuild problem Rhino for Windows	29	4540	December 19, 2017
Rebuild/ ELMO - Missing input Serengeti (Rhino WIP) windows	6	178	February 11, 2026

Rhino WIP Feature: Elmo. A new Rebuild command for Curves

Related topics