The next parts to install were the 'inside corner' pendants. And, yes we could have used the technique where you use a small piece of crown that is double bevel cut to make the corner: http://www.compoundmiter.com/images/cath4.jpg

But since we already have 'set the style' with the beam pendants, and we have 4 outside corners that MUST use a pendant, we thought that we would stay with that style. (Of course if you're looking for an excuse to buy that Makita 14 inch compound miter saw for $600, this could be it. As for me, my venerable 20 year old Delta 10 inch miter saw and my 50 year DEWALT Radial arm saw did the trick. Yes, I am a radial arm saw lover. No table saws in MY shop.)

Again, these are a built up of baseboard, then WM54 crown and finally 1/4 by 1 1/8 inch flat stock. Instead of cutting small MDF scraps for the Crown to attach to, we just cut 2 3/8 square blocks of MDF and glued them in place.

This corner is a 'lower' pendant and has its top edge cut to 12 degrees to match the ceiling slope, the one on the right shows the angle. The left one has the notches cut in it to make room for the 1 x 3 that runs the perimeter of the room.