Use this procedure to miter the corners where curtain walls meet. The corner where adjacent curtain walls meet is not mitered by default. However, you can determine the necessary angles automatically.
The miter angle applies to all infills and horizontal edges (frame or mullion) that are adjacent to the corner. Vertical edges are not affected.
Tip: If you want to create a custom corner condition between two curtain walls, you can replace the edge of one curtain wall with an AEC profile and remove the edge of the other curtain wall by using the frame override Remove Edge option.
- Select one of the curtain walls.
- Click
. 
- Select the other curtain wall.
If you change the angle of either curtain wall, use Set Miter Angles again to recalculate the angles.