Here are all the sides for the first twelve pipes. Staring with two 2x12x16' poplar boards, it was almost a whole day of work to get to this point:

After seeing lots of real wood pipes with a square top on the block, I decided to make the Bourdon pipes this way as opposed to having a 70° slant as in the Soubasse pipes. Here are some photos of a Bourdon block with a flat top. For reference, there is a photo of a Soubasse block showing the 70° slant.

All the real wood pipes I've seen (except for 16' open wood pipes) have the mouth cut into the front. I decided to do the same for the Bourdon pipes. Here's the jig I made to cut the mouths using the router:

And after a little clean up with a razor blade and a square:

The Bourdon pipes don't have beards or ears: