Kitchen Room Saver - Flying Cook book holder

Our kitchen is small and we always look for some space to safely place the cook book.
the book holder is strong enough to even carry heavy cooking books and it also can swivel to the bottom of the wall unit, so turns into stealth mode when not being used.

I wanted to have a tailored solution that prints on an average printer with 20x20cm build plate.
I also wanted to avoid any additional components like magnets or metal axle, bolts or similar.
The solution is printable without supports and