Or what am I missing? Is it a bug? Just questions—I don’t need a ‘workaround’ :slight_smile: FlipSrf.gh (10.4 KB) [image] [image] Thanks Also: :sob: [image] Surface flip = true but JK [1413993487_cute_baby_rhino_escapes_from_stable]

Okay. First things first: pushing a surface through a Plane container does not give you the frame of a surface. If you want to see the surface frames, use Reverse Surface. These are your original surface frames: [image] You can see that they both pointing with the Z-axis in the same general direc…

wait another minute…. [image] René Corella: That usually when I use FlipCrv, the curve does get flipped, whatever that means—with or without a guide curve. It works with the same logic as flip surface (input, guide(optional) - output, boolean)

[image] René Corella: That usually when I use FlipCrv, the curve does get flipped, whatever that means—with or without a guide curve. Or maybe it never gets flipped and I’ve always believed it does and that’s why all my projects are wrong!!! [mind-blown-shocked-face]

[image] try and play with the sliders FlipSrfCrv.gh (10.9 KB) Is it possible that you were meaning and expecting something else as “flipping”? like rotating/mirroring/twisting/you tell me

[image] Fabio Franchetti: expecting something else I was expecting the thing to be flipped. I’m sorry you’re spending time on this. To illustrate, here’s a result from FlipCrv (planes highlighted):slight_smile: [image] [image] Here’s the result from FlipNormals: [image] [image] Both …

What exactly is the problem? You have shown so many things now.

I wanted the flip component to flip the d@&n srf and it didn’t—because that’s not what it does, it flips the ‘normals’, but results don’t evidence that. I am sure it’s my fault :grinning_face_with_smiling_eyes:. There’s no problem anymore—the conversation became a joke. I’ll delete the post.

[image] Volker Rakow: Do you want an explanation? I always welcome your explanations! But I challenge you to go beyond this: [image] Sorting List to match original Grasshopper Help is a disaster. Meanwhile the developers are off doing god knows what.

[17739647082357111850671839904943] Like earlier, IS PLANAR just give a plane aligned correctly, but the Z Is random/ not consistent (it’s a plane that fits, not its exact one). If you extract the plane by evaluating the surface, everything goes as expected

How Does the "Flip" (Surface) Component Work?

Grasshopper

René_Corella (René Corella) March 19, 2026, 11:56pm 20

I always welcome your explanations!

But I challenge you to go beyond this:

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How Does the "Flip" (Surface) Component Work?

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