Hopefully the “Elmo” tool will be capable to do a similar job with the surface, because at the moment converting degree 3 surfaces to single-span degree 6 surfaces results in a highly distorted output surface that are practically unusable.
Yes, I didn’t even tried Elmo, but I need ElmoSrf now! 
1 Like
Could you provide examples. Development is driven by bug reports with examples.
Attached is an example where a 11 x 11 points degree 3 surface is converted to single span degree 6.
Rebuild on the edge curve shows the same oscillation.
Right is Elmo with Smoothing Medium:
Elmo_test.3dm (172.5 KB)
3 Likes
Extreme distortion with chaotic position of the control points when converting to single-span surfaces has been reported multiple times in many topics over the past few years. Here is one of the topics which I started in 2022.
Extremely distorted Rebuild surface.3dm (181.4 KB)
1 Like
That looks like an extruded surface. It could be handled by Elmo’ing an isocurve and extruding the result.
Yes, it was just the simplest possible example that I made quickly for the purpose of the bug report. However, in real case scenarios, Rhino users most often work with double-curved surfaces rather than straight extrusions. Having a proper “ElmoSrf” is crucial, especially for product design that relies on single-span surfaces.
4 Likes