We have a curtain system inserted in a precast "shadow box" with beveled sides, and then a series of horizontal glass fins at the horizontal mullions. Currently this is modeled as a series of nested curtain walls to make design changes easier. However, we want the end of the fins to bevel to match the shadowbox, and as far I can tell there is just no way to do this with the overly simplistic curtain wall mullion. Hopefully I am wrong, and i can cut the ends of a mullion at an angle? Or is my best course of action a series of 2 point families?