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3D printers leave hidden ‘fingerprints’ that reveal part origins
(grainger.illinois.edu)
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this post was submitted on 27 May 2025
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They'd need Access to the suspect's printer, to print more copies for comparison in order to tell, though, from how the article describes it.
Similar to how they match bullets to the gun that fired it. It's not like it prints a serial number QR code on it or anything