BIRCH PLY Plywood Boards 2mm 3mm 4mm 6mm - Model Art Crafts Laser Pyrography Is
Excellent for a range of uses including general craft, laser cutting / Pyrography CNC etc. Note The 2mm and 3mm Plywood is Birch outer with a Poplar core. The larger 3mm boards A4 and up can be especially prone to warp.