What Size CO2 Laser Engraver Do I Need? If you are sizing a CO2 laser engraving machine for a small shop or signage business, the 1390 format (1300mm x 900mm work area) is the most common starting point. It fits standard 1220mm x 2440mm acrylic sheets when cut in halves, handles A3-sized wood panels, and leaves enough working room for jigs and small rotary attachments. Smaller 6040 or 9060 machines limit you to small gifts and phone cases; the 1390 is the first format that