Your boundary surface is a “Trimmed Surface”. If you use Untrim, It will show you the underlying “Untrimmed Surface” boundary.
It won’t disappear whatever you try to do… Just use Evalute Surface based on that untrimmed boundary.
Your boundary surface is a “Trimmed Surface”. If you use Untrim, It will show you the underlying “Untrimmed Surface” boundary.
It won’t disappear whatever you try to do… Just use Evalute Surface based on that untrimmed boundary.