The vault needed some work. I am not finished yet. I need to make separations in the windows for stain glass. Making this new vault was very time consuming. I could not make a bezier curve work so I built one my self with a cube as the basis. I then mirrored and tried to use the Boolean modifier and Union. It was difficult and I did not quite accomplish the boolean cuts the way Mike described them (must have mis-understood something). But after fiddling with deleting faces, extra vertices, missing faces, inverted normals then making new faces to fit the model, I came up with this.
The problem I know I will have is that I needed to overlap the column bases in the Vault to make the piece fit my Church correctly. I hope these problems will be hidden since I am only going for an interior viewpoint in final renders.
