This shelf is cut from a laser cutter and just snaps together. It allows to create extra storage space from an existing shelf.
This is a multi-platform (mac, windows, linux) application that generates the shelf design based the parameters written on a text file. The generated SVG file can be used to build the shelf with acrylic, plywood or MDF with a laser cutter. The executables, the Processing sketch source code and an example SVG are included in the design package.