I thought about this as an alternative to the usual paintings. A framework remains hanging on a wall unchanged for many years. The idea is to have hanging on the walls of the house some books next to the paintings. Many covers of the books are very beautiful and full of colors. So why not exploit them .. These supports modular books, give the possibility to change the look of our homes, whenever we want easily and fast .. .. just change booksFor printing there is no specific recommendations. I used ABS with a layer height of 0.25mm. The wire used to bind the various pieces, is a nylon fishing line by 0.35mm in diameter. So the most useful advice I can give is to use a node from fishing to prevent untie the knots (for those unfamiliar, in youtube there are many videos that teach how to tie knots)