The bookcase is going to be 6ft tall, 30in shelves interior, and probably 14in deep. At 6ft, the idea of adjustable shelving appealed to me.
I am trying to make the sides about 1.25in wide using rough sawn 6/4 white oak. I figured I would lose about .25in from it, more or less. I wouldn't want to go more than halfway through on a dado. I am going to dado into the sides a 3/4inch plywood sheet for the back and use 3/4inch plywood for the shelves. The bottom and top will be white oak, probably rabbited and dadoed in. The bottom shelf will sit 2in from the ground and have a 2in support, front panel, and maybe a bit of decoration or something.
Bookcases are a pain to design. Every single one I have had I have bent the shelves but they were also crap to begin with. To avoid this, I want to dado the shelves into the back and sides with a 3/8 dado cut in the back, 3/4 dado in each side, and a front support that probably will dado into the shelf and dovetail into the sides. That way, each shelf gets support on all 4 sides.
That is one idea but then I found this sawtooth system and having 1.25 in thick support from white oak teeth cut at a 30 or 45-degree angle with a 1.25in thick support slats sounds incredibly strong. Like, that might actually be stronger than a dado especially if I add a 3/4 half inch plywood rod under each shelf and build a little notch for it in the slat.
BTW, I am purposefully overengineering this. I have a lot of books and they are quite heavy. They are also unrelenting weight on an item. I just don't know which is stronger but I do know what is more convenient.
Last edited by bholland; 01-07-2019 at 05:48 PM.