Platzhalter bookshelf

So instead of just buying more bookshelfs as your books outgrow your current one, why not just expand the bookshelf you have? The Platzhalter bookshelf does just that, forming a capital V in the process of your book expansion, which adds an elegant design element to your library in the process. The exposed boards that open up the bookshelf as it expands are also hidden when the bookshelf is level vertically. Nice design as long as those expansion boards are secure.