RS PRO 3D Printing Filament The RS PRO 1.75mm diameter silver 3D printer filament has PLA matte printing material, that is a highly aesthetical, PLA based filament with sparkling flakes inside. The slightly modified filament retains the typical features of PLA but is tougher and less brittle. The sparkling flakes conceal layer lines. Polylactic acid is one of the most popular materials for 3D printing. Due to the translucency of PLA combined with the flakes, the colour saturation can be increased by adding on to the wall thickness. There is no need for a special nozzle as the material is not abrasive. Features and Benefits - Beautiful metallic effect - Layers are not visible - Low warping, limited smell, and not abrasive - FDM printing technology - Tolerance of ±0.05mm - Roundness of ≥ 95% - Specific gravity of 1.24g/cc - Tensile strength at yield of 70Mpa - Strain at yield of 5% - E modulus of 3120Mpa Certifications - ANSI/ESD S20.20:2014 - BS EN 61340-5-1:2007