The suit against 3D-printing filament and materials Polymaker, alleges the company knowingly advertised its products as capable of creating "ghost guns" -- unserialized 3D printed firearms -- despite the practice being illegal in the state and county. The suit alleges Polymaker "did more than sell a product that some customers happened to misuse. The company created firearm-themed products, partnered with gun-printing influencers, paid affiliates to promote its filament to gun-printing audiences, provided technical guidance for firearm applications and engaged directly with online communities devoted to printing guns," the county statement said. #3dprinting #3d #technology