Some 3D printer filaments are more toxic than previously thought, researchers found

Researchers from Charles University discovered hidden toxicity in 3D printer materials, particularly soft filaments unsuitable for prolonged skin contact. They tested sixteen commercially available filaments over two years, finding that materials like PET G and FLEX should not be used for items worn on the body or those that come into contact with food. Experts also warn about the home use of 3D printers, as the plastic can release millions of microparticles at temperatures up to 300 degrees Celsius. It is advised to use enclosed printer boxes and ensure proper ventilation. Consumers should avoid cheap filaments from Asian e-shops and check safety data sheets and certifications.