Metal (aluminium, AISI Type 316 stainless steel, brass and copper) is used for the lightbox with opal acrylic push through letters. The (S) effect is illuminated on the face and sides, with or without a translucent adhesive. The (N) effect is only illuminated on the sides. The face is made with a non-translucent adhesive or metal but is smaller than the letter to create the edge lighting effect. Solid acrylic letters are individual pieces that slot into the lightbox and are fastened using silicon and/or polyurethane adhesives.