You can manually stitch surface borders with pattern components. Revit pattern components don't require to be hosted on nodes of divided surface and can also address the problems of creating and placing pattern component panels (triangular, pentagonal, hexagonal, etc.) on non-rectangular and non-evenly spaced grids.
To stitch surface borders with pattern component
You can clean up the border conditions of applied pattern component families by using individually placed pattern components. Notice the open edges in the following example.
This example requires a 3-point pattern component to fill the edges that were not filled by the selected pattern component.
Create a new pattern component family.Notice the shape of the component family is represented on the cursor.