I posted recently that my oft-delayed bookcase project was done. It's two mirror-image pseudo built-in units. From the moment I did the first CAD drawing, I guessed I'd eventually install a "bridge" between the two units, like this:
Even though I haven't got the time to start that project at the moment, I'm letting it percolate in my brain. A question has bubbled up. My first thought was to assemble it with dado joints, like this
I intend to double up the bottom of the unit with two layers of 3/4" ply. This is so the face frame won't either overhang the bottom of the unit or create a "lip" inside.
But that second layer of ply gave me an idea; since none of the four sides of the basic box will ever be seen, I could build the basic unit with screws instead, like this:
Once I attach the extra bottom layer, the screws in the bottom of the basic box would be obscured as well.
I haven't decided yet. The "screw" method saves me the work of making the dadoes, but the dadoes would make it really easy to line up the parts for assembly, if nothing else.
Thoughts?