HDPE Plastic Rectangular Solid Bar - 2" x 3" x 12" Block (Natural, high_Density_polyethylene) : Amazon.ca: Industrial & Scientific
3D file Plastic full-size motor boat made of monolithic sheets of block copolymer of polypropylene PP-C or low pressure polyethylene HDPE High Density Polyethylene for extreme operating conditions 8 mm thick・3D printer