3mm MDF Board - Wood Board, Medium Density Fibreboard (Package of 20 Pieces, 12" × 12" × 1/8") - - Amazon.com
3mm HDF Platte 100x100 cm roh : Amazon.de: Baumarkt
Amazon.com: Acrylic Sheet A4 (297mm x 210mm / 11,69'' x 8,26'') 3mm Thick, Plastic Panel Plate for Model Building, Home, House and Garden, Font Colour:Purple : Everything Else