Modify panel > Make a patch selection. > Modifier List > Patch/Spline Editing > Delete Patch
Delete Patch provides parametric deletion based on the current sub-object level in the stack. The possible choices are vertices, edges, patches, and elements. Apply the Delete Patch modifier to delete the geometry specified at that sub-object level.
For example, you can apply a Patch Select modifier, select a row of patches in a patch sphere, and then apply a Delete Patch modifier to delete those patches. To undo the deletion, remove the Delete Patch modifier.
Procedure
Example: To delete a patch in a sphere:
Create a patch sphere.
Create a sphere, right-click the sphere, and choose Convert To Editable Patch in the quad menu.
On the Modify panel, in Editable Patch, choose the Patch sub-object level, and select a patch.
In the Modifier List, choose the Delete Patch modifier.
This deletes the selected patch.
To undo the deletion, remove the Delete Patch modifier.
Interface
There are no parameters for this modifier.