0.8mm, 1.6mm & 3.0mm laser engraving laminate with aluminium coloured micro surface layer on a black core This product is specially manufactured for Hobarts and for processing on a laser. It is a 2-ply sheet with a micro thin (0.1mm) top layer on a coloured core. By engraving away the top layer it reveals the core colour Unlike similar products, the core is acrylic only. It does not have an ABS layer which is really for rotating carbide engravers. 0.8mm suitable for interior use only. 1.6mm & 3.0mm suitable for both interior and exterior signage. Clean with warm soapy water - do not use abrasives. For best results we recommend engraving bottom to top so that your air assist is not dragging the colour across a lighter core colour Available in 4 sizes: 300x200mm, 610x305mm, 600x400mm & 1220x610mm