Hot answers tagged shelving
I would have no concern building this with the right fasteners. There are plenty of really nice, self-tapping, nearly indestructible construction screws to be had (random example). The key joints are at the back of the shelf, where the vast majority of the torsional stress occurs. Use whatever decorative fasteners you like at the front. Put two 4" ...
My take is that the sheer thickness of the shelves that you propose will look heavy and chunky to the point of being unattractive. I would also have concerns about the overall sturdiness of a shelf that is cantilevered off a single 2x4 screwed to the wall. If it were me I would go for a thinner style of assembly and use vertical end sides on the shelves.
Only top voted, non community-wiki answers of a minimum length are eligible