Glowforge Proofgrade Walnut Thick Plywood brings you the ideal material for use with your Glowforge Plus or Glowforge Pro machine. Its great for kitchen accessories, desktop accessories or game pieces.Proofgrade Plywood is custom fabricated with an engineered wood core surrounded by a micro-thin layer of natural hardwood, resulting in a strong, beautiful, and versatile material that youll use every day. The Proofgrade collection is specially designed and safety tested for laser cutting and engraving. Proofgrade materials are formulated for use with the Glowforge 3D laser printers and are outstanding for any CO2 laser cutter or laser engraver. Size: 30.5 x 51cm (12 x 20 inches) Thick plywood (approx. 1/4 inches) Engineered wood core surrounded by micro-thin natural hardwoodStrong, versatile materialIdeal for use with the Glowforge machinesSafety tested for laser cutting and engraving Perfect for kitchen accessories, desktop accessories and moreGlowforge Proofgrade Walnut Thick Plywood