Shrink and Divide patch surface?

[Michael_Pryor (ekim)]

You cant.

"Isotrim" untrimmed my trimmed surface

It’s not possible. Nurbs exist always as untrimmed 4 point surfaces. You can trim them but any evaluation (like an iso) will always be of the untrimmed underlying surface. Best you can do is use the iso’s, then trim the entire result with the trimmed surfaces boundary.

And if you want to understand why: Rhino - What are NURBS?