To me it seems odd that lofting a series of profiles produces distorted and undesirable results. However, with those same profiles, if lofting is done in sections of those profiles (broken down into smaller ‘stretches’ of profiles) then simply using the join command after to make a single surface -…

[image] Tom_P: which software ? what export options ? export the surface ? I can’t answer that until I know what you mean by ‘Don’t expect much from a single surface’ As I don’t see what these questions you just asked have to do with my needing the surface as refined as it is. Again, goin…

Why not import the surfaces from “the other software” (which apparently cannot be revealed) to Rhino? For NURBS 3D surface modelling, there are far too many curves, and the curves are far too dense.

[image] Lagom: Why not import the surfaces from “the other software” (which apparently cannot be revealed) to Rhino? Because the other software can’t create nurbs surfaces from which boolean operations can be done. “For NURBS 3D surface modelling, there are far too many curves, and the curve…

[image] Tom_P: further digging the curve-set up is problematic, there are multiKots. _removeMultiKnot _loft… What is problematic is the loft command itself. If I am able to ‘break’ up the use of the profiles - Meaning create a loft from say 3 sets of the same profiles, then join them toge…

[image] BabaJ: it would be useful to rework the loft command to make it more robust. you can title your topic (wish) or (bug). but as i already said: [image] Tom_P: Don’t expect to much from a single surface. (… single surface or single surface command) which software are the curves…

If this were a point cloud or mesh obtained in the automotive design process, you would never even contemplate using input like the one obtained from the mystery software. Even with Alias or Catia, I would not touch this with a barge pole. Since we do not know what you really want to achieve, and f…

[image] Lagom: Since we do not know what you really want to achieve, and for what reason, it is hard to suggest anything meaningful. It’s very simple what I want to ‘acheive’ - And this will now be my third time explaining it. So I will again explain it. Why can’t the loft command not produ…

[image] BabaJ: Why can’t the loft command not produce the same surface with no distortions when all the profiles are selected Even in Alias’ or Catia’s equivalent tools, this kind of interpolation can’t be done, for a reason.

[image] Lagom: this kind of interpolation can’t be done, But it can be done - And I’ve already said, now for the fourth time.

similar topic 2 years ago… [image] Distorted Loft Rhino Hello, I was hoping someone might be able to say why my loft gets distorted from the profiles used. Each profile was created sequentially in the same manner, e.g. same number of control points, same order, etc. I ev…

Refine Loft command

Rhino

Tom_P June 15, 2025, 10:58pm 15

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