The puppies are now installed with metal L brackets. L brackets were not the look at I was going for but I figured they give good support without having to block off the left side of the shelves with a support beam. If I had a router, I may have attempted to inset the L bracket into the bottom of the shelf but for now, this newbie is happy enough. Anybody ever veneer an L bracket? :)
Not the most artistic project but fun nonetheless.
p.s. That’s an IKEA sliding door that I hacked and installed in the closet opening.
Sorry for the toilet shot!
-- Matt - Brooklyn, NY