Squaring by Lee Sehoon. The hinged boxes of this bookcase by Korean furniture designer Lee Sehoon can be spun round to create a neat grid or a scattered circle (+ movie). Interiors Inspiration, Inspiration Ideas, Extended Bookca, Squares Bookcases, Circles Shelves, Design Shelf, Book Shelves, Lee Sehoon, Shelves Squares
Also on these boards
There is no tutorial. These are a purchased item at this link. I like this idea for a nightstand by the bed. 8"x8" routered boards with 8" gap between shelves.