Surface Fillets enhancements in Rhino 8 _FilletSrf has been enhanced with a new dialog that allows you to set the radius dynamically. While changing the radius, the result will update in real time. You now have three fillet options: Arc, Deformable and G2. Deformable fillets are non-rational with G…

[image] Bobi: It’s necessary to be able to change from 16,861064 to 16,861063 or similar numbers. Rhino must allow adjusting even the 7th number after the decimal comma in a quick and convenient way. Working with greater radii requires even more accuracy, up to the 8th or 9th number after the de…

Those tight numbers work in a different way than just moving the end control points by the absolute tolerance or snapping them to existing geometry, because the former are used to manually alter the radius of the surface fillet, hence adjust the position of the new surface’s edges. Depending on the …

[image] norbert_geelen: But this is getting confusing because of me taking this thread ever so slightly off topic, sorry about that. It happened when we were discussing consolidating all blending/filleting tools. I did that with the subject of this thread :upside_down_face: The discussion of…

I like that this tool is giving us 3 options for the profile of the surface. I just wish that they were arranged like “Arc, Blend, Deformable” instead of “Arc, Deformable, G2 Blend”. It makes more sense for “Deformable” to be at the last place. However, I also agree with you that those extra option…

This is starting to look close to NX… I like it! :smile: Can we get more direct-in-view-on-model controls next?

[image] Vince: Respectfully, tbh this extra menu feels quite clunky from a UX perspective and I don’t see the need for it given how little information it displays. It’s not my favorite either, but Iet’s first to see if we can find a workable solution with the things that are already present. …

[image] Bobi: However, I also agree with you that those extra options make the panel way too big, so those who want to make regular surface fillets literally don’t need 70% of the area that new panel takes. The panel size doesn’t bother me. If I want to make a regular arc Fillet I never see …

I think they want to keep Rhino very basic. The options of almost all tools are minimal. The options panels proposed by you, Bobi, are perfect, complete, which bring to mind those of parametric CADs, such as Nx, Catia and similar. If we look, for example, at the options present in the Nx fillet pa…

Do you have any evidence that the preview in Rhino is misleading and the output surface is less accurate than what the preview suggests?

I fail to understand how making the tool more inconvenient to use and lacking critical options would make my workflow simpler and easier. In my video in an earlier post I showed how I needed more than 90 seconds to be able to adjust the surface fillet in Rhino 8 close enough (still not as accurate a…

Rhino 8 feature: Surface Fillets

Serengeti (Rhino BETA)

Rhino_Bulgaria (Bobi) January 7, 2026, 11:43pm 110

I will be happy if the developers at least add a secondary precise adjustment via the sliders and get rid of those 4 buttons to control the “drag strength” steps.

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Rhino 8 feature: Surface Fillets

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