Attached is a image that attempts to communicate my frustration with this issue in SubD. One can see where the edges meet, you get this “pucker” that distorts the surface at the juncture of these edges. When you convert to NURBS, this pucker remains and is aesthetically distracting.
I’m sure this probably has been addressed, but I haven’t seen a solution. I’m a long time user of Rhino and was a accomplished user of TSplines prior to McNeels onboard SubD app…which I really like. TSplines had a command that would “Relax” a surface and in most cases, eliminate this pucker.
If anyone has a solution, I sure would love to learn how to avoid this issue.
@Jim_Girard Please share a 3dm file with the problematic geometry. I don’t know what I’m looking at in your images. You can also send the file to https://www.rhino3d.com/upload if you do not want to share it publicly on the forum.
Also, a SystemInfo report will help. We’ve made changes to the display of SubDs in the WIP, if you’re coming from Rhino 8 this might be better now.
I’m not sure what the TSplines Relax command was doing. In Rhino now, you could improve the topology and quality of the limit surface and ToNURBS conversion of your SubD by keeping star points away from sharp features. @theoutside might have a quick way to fix it.
