Extruded surfaces broken up


I am having trouble with rhino mac creating horrible surfaces. I have extruded a curve and it has resulted in messed up surfaces even though it is a simple straight extrusion. I first thought that rhino was just displaying them strangely but i have taken the object into keyshot and the textures are all over the place. I have tried redoing the extrusion, redoing the curve and extruding that and duplicating the edge needed and extruding that to no avail. I have even started a completely new model/file and the same thing is happening here.

It also seems to be preventing me from doing things to the object. I cannot use the boolean functions on it. When I try and fillet the edges I cannot select some and others all select at the same time.

I have attached images of the original file and a simple example of what is happening. Any help would be appreciated.


Hi Luke – please run the DivideAlongCreases command on these obects and also run the CreaseSplitting command and make sure that is set to ‘Yes’ to prevent this from happening in the future.

Any better?


Thats perfect. Thank you very much.