see-saw oak bookshelf

this wall-mounted version features the same marble run in the shelf front edge- when activated by adding/removing a book, the shelf tips and the marbles scurry into action

see-saw oak bookshelf

the central pivot brackets are made of steel and 6 screws into the masonry ensure the strength of the shelves…… with pins affixed to the wall to limit the shelf’s tip to a couple of inches.