Just put one together this afternoon and I am extremely happy with the result. I had Home Depot cut the ply twice for me so I had four 2x4 foot pieces to bring home, each of them good for one full box. Even though the wood was more than $10, I still was able to do each box for $4. Everything went together just beautifully and the five frames fit very well with good clearances where they should be. I did make one small change though, as something occurred to my as I was out this morning watching the activity around my full hive and nuc. I decided to cut the entrance opening the full width of the front board so I'd be able to use an entrance feeder with it.
Again, thank you for providing this. It is so well thought-out.