When the book collection threatens to burst the shelf
Bookshelves often seem to burst. You always try to squeeze in another book into the last gap which is far too narrow.
More books – more space
The shelf „Platzhalter“ gives in to force and makes space for more books by literally bursting.
Initially hidden boards stretch between the split halves and widen the usable surface. The more books you add to the shelf, the wider it opens. The classical rectangular shape turns into a V-shaped outline until the shelf reaches its defined limit.