Looks like I'm going to be using 5" crown molding on a cathedral
bedroom ceiling. It's paint-grade, but because the molding
profile is so large I will not be able to fake the joints.

The problems a

o Where the level ceiling line meets the rake, the plumb cut
on the rake molding will not match the profile on the level;
it will be wider. I was thinking of some sort of stop block
in the corner, but this doesn't seem ideal, or easy.

o The ceiling on the level runs moves up and away from the top
of the molding, creating a gap. I could place a filler strip
in
it, but that wouldn't match the rake profile. This also mitigates
for the use of stop blocks in the corners.

Any creative ideas would be appreciated.

p.