Pack of 10 MDF Blank Sheets 3mm Thick, A5, A4 & A3 Size, Safe for Laser and Pryography… (A3 (420x297mm)) : Amazon.co.uk: Home & Kitchen
Amazon.com: 3MM 1/8" x 12" x 20" Baltic Birch Plywood - B/BB Grade (Pack of 6) Ready for Glowforge Laser Printers - Perfect for Arts and Crafts, School Projects and DIY Projects
Amazon.com: 3mm 1/8th inch MDF (Medium Density Fibreboard), 12”x 19”, Glowforge Ready, Unfinished | Box of 10, 20, 50 and 100, for Laser Engraving, CNC, Wood Burning, Router, Scroll Saw. by Craft Closet