Hanging bookcase. Made in protest, because of the high prices for similar products, moreover, very miserable.
Six panels 1000x250x16 mm were purchased from a well-known chain store. Nothing was cut.
In the corners in the middle in height, steel mounting plates are screwed (they are not visible), with their help, the shelf is held by anchors driven into the wall.
Another reinforcement element is clearly visible - this is a screw tie and a bracket, also attached to the anchors.
I attribute this work to technical creativity, because it contains a centner of books on electronics and programming)))