Components of the Graffiti Jumble
Grid: The grid of squares are made up of equally sized pieces of wood with magnets attached on one side and a flat surface on the other. The surface provides a blank, movable palette for art to build up over time. Once the surface is painted, pasted or stickered with something, the squares can be rearranged to produce a new canvas. The next person to add to the surface can change his or her palette, while providing a new background for the next artist to tag.
Frame: The frame sets the boundaries of the grid and prevents the magnetic squares from sliding down the wall's surface. (Even strong magnets slide easily.) The frame will be bolted or screwed to the wall.
Magnetic Surface: A magnetic paint undercoat provides the surface to which the magnetic squares will stick. Since large iron structures are rare in most urban areas, any surface can be made magnetic with the use of magnetic paint. Once you choose your location, you will have to paint the surface 3-4 times before attaching your frame and squares on top of it.