Toxic 3D printing

It is almost inevitable that any new technology will come with problems despite its benefits. Now, researchers at the University of California, Riverside have demonstrated that objects produced by some commercial 3D printers are toxic to certain fish embryos. William Grover and his colleagues studied two common types of 3D printer: one that melts plastic to make an object and a second that uses light to turn a liquid into a solid part. The team found that both products were measurably toxic to zebrafish embryos but the liquid-based printer produced objects that were the most toxic. They have now devised an ultraviolet post-printing treatment that can reduce the toxicity of objects made by the liquid-based 3D printer.