Scientists attempt to link 3D printed ghost guns to specific filament brands with chemical fingerprinting — major filament makers often white-label products, complicating efforts

Researchers at Curtin University in Australia are investigating the potential to trace 3D-printed "ghost guns" back to specific filament brands using chemical analysis. However, the prevalence of white-labeling among major filament manufacturers complicates this effort, as many products originate from a few large Chinese factories. The study aims to identify chemical fingerprints in 3D-printed parts that could help law enforcement link them to criminals. Despite challenges in differentiating between filament brands and materials, the research explores the possibility of using polymer traces as unique identifiers for 3D-printed firearms. The study analyzed various filament samples, revealing insights into the composition and challenges of identifying materials used in 3D printing.