GoKawiilCurtin University researchers develop method to trace 3D-printed PLA parts to source filament
A study published October 22 in Forensic Science International describes a forensic technique developed by Dr. Georgina Sauzier and colleagues at Curtin University, in collaboration with ChemCentre, that matches 3D-printed PLA objects back to their original filament. Using differential scanning calorimetry to measure thermal properties altered by printing, the method correctly matched 26 of 28 tested PLA samples to their source filament, down to brand and type.
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The technique could give investigators a new way to link seized 3D-printed firearm parts, often called ghost guns, to filament supplies, potentially helping map manufacturing and distribution networks that current serial-number and licensing systems cannot track. Because PLA-printed guns are cheap, accessible, and hard to trace, this method may offer law enforcement an early tool to address a growing gap in firearms regulation, though its real-world reliability and legal admissibility remain to be tested beyond this initial sample set.
- Researchers matched 26 of 28 PLA samples to their source filament using thermal analysis.
- The method could help police link seized 3D-printed firearm parts to filament sources.
- 3D-printed 'ghost guns' remain largely untraceable, making this a potential forensic breakthrough still in early research stages.
Source: tomshardware.com — Jhet Borja, 2026-10-31
Published there as: “3D-printed ghost guns may now have a way to be traced to their source”
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