Surface Engraved Signs
A cutting tools rotates through the laminated material at a specific depth leaving a trough of exposed core. The result is that the top laminate becomes the background color and the exposed core becomes the text color.
Reverse Engraved Signs
Reverse engraving refers to the process of engraving the "under-side" of a substrate - allowing the top or finished side of substrate to remain smooth. Materials specifically designed for this application are usually 2-ply with a clear surface as viewed from the front and a thin colored layer on the back. When the engraving is completed, the text is paint filled to the color of your choice.