Your plans have been a great help. I bought one of those cheap dado blades ($35 7" Delta Dado) that can be adjusted to different widths and immediately realized the benefits of the stacked dado in regards to getting a cut exactly 3/4" wide. It takes time to keep adjusting the dado until you get the width you want. And then every time you take the blade off and put it back on again you never have exactly the same width. Hence every box is different and you have to keep the wood together that was cut at the same time. You should stress that in your plans. It will be helpful to other novices contemplating building their own hives. Your clear explanations gave me the confidence to start building my own hives even with no prior woodworking experience.