the quality is good of subd IMO
The problem I have currently with it is when you convert to nurbs it creates too many surfaces, frankly 1 nurbs surface for each subd face, even though that subd could be represented by a single nurbs surface. But the edges and curvature is quite OK.
That is suddenly super interesting. As @Rhino_Bulgaria said, how is the surface quality at joints?
Do you have a corner or join from a production model that you can share? Just a couple of surfaces of a part?
I mean, that’s revolutionary if true, because even IMA in Catia (and probably the Speedform in Alias) is only ever good for sketching. We always rebuild everything in the traditional way afterwards.
I completely missed this. Is there some documentation on it anywhere?
If you import a subd mesh from, say, Blender and convert it to Subd in Rhino, will it become “high quality”?
I guess I have some testing to do…
@eobet
As far as I remember (Sub-D Surfaces from Speedform) the biggest “flaw” is that you cannot express certain flows. Yes everything is connected G2, but its very difficult to actually control the flow of the reflection because of the patchlayout created. It looks perfectly relaxed, but the shape itself may not follow the the design intent and may looks “too smooth”… I mean you sometimes move away from G2 to a better G1 or to G3 to better marriage your features. So I’m not sure if Sub-D modelling will replace traditional modelling anywhere. I don’t even think this is the intent.
In the end sub-d surfaces are super useful because it allows even early designs to be threaded almost as it its production data, but depending on what you do its not wrong to remodel/refine traditionally once the form is clear. I also see great application possiblities on complex patterns…
The quality is good enough to mill the mould without problem. The quality of the original geometry you made matter.
Here is a link to the documentation we currently have: https://discourse.mcneel.com/t/rhino-7-feature-subdivision-geometry . The getting started videos will help with interface. The Detailed documentation link will help understand the differences with our SubD.
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I’ll try the YouTube route…
Still mesmerizing though 
You can also post youtube links here and have the content embedded in the post.
Ugh! Still very lossy…
I cannot understand what makes the second product tick. Are these bubbly things due to the substance inside? Are they part of the outer shell? How do you make them change their shape? Seems like an animation and not a real life thing.
Or maybe it is a lamp and a light play.
If you are old enough to hav grown up with a recordplayer you might have marveled at the red light while adjusting the pitch, same thing just 100x cooler! 
Let’s just say I am more of a VCR and magnetophone (or whatever it is called in English) generation kinda guy, that slighly covered the vinyl era. Very very slightly I remember finding some fairy tales records on a vinyl collecting dust that I listen to that rotating wirdo machine 
Before my dad bought the VCR. And the Atari took over after that…
Art installation designed in Rhino and Grasshopper, which I used also to code “animations”.
I posted also more detailed post in gallery.
my 2 cents here 
https://www.crdesignstudio.it/my-product/kis-filo/
This are all objects made mainly with rhino (the pattern) and small Creo (the main shape and the borders) .
We gave rhino Step files to mill the mould.
yes…
and no…
It’s a real object, but the effect is achieved by stop-frame animation: take a photo, rotate it by exactly the right amount, take another photo, etc and then compile the photos into a film. In practice I did this by building a little Arduino-controlled turntable to control the rotation, and took the photos manually. Perfect Boring/Fun balance… In the end the whole zoetropic aspect and ‘hollow face illusion’ aspect of the designs was totally lost on the client, they were happy they looked nice, and anything else was just too complicated to communicate to the customer. Sigh…
I looked into doing this with real-time strobe lighting but unfortunately this example would need to spin so fast that even in a dark room the effect would be quite dim. The example shown only works with stop-frame animation, but I’m currently working on a set which will be optimised for real-world real-time application…
I imagine a strobe light within on a turntable could be a cool effect too 
But not for those with epileptic tendencies maybe?
Epileptics are usually affected by lower frequencis I think, but better check obvs!
‘Adult’ version available at the MoMA store in New York:
